PROS
- Very safe
- Viable upto at least 130 ubers with minimal gear
- BIS gear is pretty cheap
- Tanky
Cons
- Minion AI is Derp
- Typical play style requires use of alot of different skills
- Screen Clutter
Gameplay
Important Mechanic
Minion stats are snapshotted at the time of summoning. This includes benefits from stances. It may be wise to build a second "Max minion stats" set of gear but it is absolutely critical to abuse 2 stances by using one when summoning minions and another for yourself.
Precombat
Active Wolf stance and summon all your minions including your wolf. Then depending on your area and play style either stay in wolf stance or change to either Bear or Eagle stance depending on if you need defense or sustain.
Combat
Use Spirit walk to tele bomb enemies and apply Spirit Reave on cool down. Any time one of your summons dies swap to wolf stance re-summon and then change out of wolf stance. Maintain Titan's Fortitude.
For very dangerous areas it may be best to not telebomb and just focus on keeping your minions up. Any time mana is a problem prioritize Guardian spirits over all others. If Mana is a problem its probably best to use Eagle stance over wolf stance. Yes your minions will have lower damage but if they are dying so fast you need to keep summoning better to be able to have mana to keep them out.
Leveling
► Show Spoiler
Skill Tree:
► Show Spoiler
Stats:
Base 600 Strength Rest Vitality. Important that the STR stat is Base and not just what is reflected on the front of your character sheet.
Gear:
Weapons:
Uldyssian's Legion
is very good --> Tainted Craft with +4 Barb Skills and Good Minion damage --> 
Uldyssian's Legion
Bronze Sword (4)
One-Hand Damage: (11 - 12) to (12 - 14)
(Barbarian Only)
Required Level: 9
Required Strength: 82
Item Level: 19
Strength Damage Bonus: (0.14 per Strength)%
+1 to Barbarian Skill Levels
15% Attack Speed
15% Cast Speed
+(24 to 40)% Enhanced Damage
+(3 to 5)% to Summoned Minion Life
+(6 to 8)% to Summoned Minion Damage
Maximum Mana +(21 to 25)%
Elemental Resists +(5 to 7)%
Socketed (2)
One-Hand Damage: (28 - 31) to (33 - 36)
(Barbarian Only)
Required Level: 27
Required Strength: 124
Item Level: 40
Strength Damage Bonus: (0.14 per Strength)%
+2 to Barbarian Skill Levels
25% Attack Speed
25% Cast Speed
+(58 to 75)% Enhanced Damage
+(9 to 11)% to Summoned Minion Life
+(11 to 13)% to Summoned Minion Damage
Maximum Mana +(31 to 35)%
Elemental Resists +(8 to 10)%
Socketed (4)
One-Hand Damage: (59 - 64) to (71 - 77)
(Barbarian Only)
Required Level: 46
Required Strength: 244
Item Level: 59
Strength Damage Bonus: (0.14 per Strength)%
+3 to Barbarian Skill Levels
35% Attack Speed
35% Cast Speed
+(92 to 109)% Enhanced Damage
+(15 to 17)% to Summoned Minion Life
+(16 to 18)% to Summoned Minion Damage
Maximum Mana +(41 to 45)%
Elemental Resists +(11 to 12)%
Socketed (5)
One-Hand Damage: (77 - 83) to (94 - 101)
(Barbarian Only)
Required Level: 55
Required Strength: 482
Item Level: 85
Strength Damage Bonus: (0.14 per Strength)%
+(3 to 4) to Barbarian Skill Levels
40% Attack Speed
40% Cast Speed
+(109 to 126)% Enhanced Damage
+(18 to 20)% to Summoned Minion Life
+(19 to 20)% to Summoned Minion Damage
Maximum Mana +(46 to 50)%
Elemental Resists +(13 to 15)%
Socketed (6)
Bronze Sword (4)
One-Hand Damage: (11 - 12) to (12 - 14)
(Barbarian Only)
Required Level: 9
Required Strength: 82
Item Level: 19
Strength Damage Bonus: (0.14 per Strength)%
+1 to Barbarian Skill Levels
15% Attack Speed
15% Cast Speed
+(24 to 40)% Enhanced Damage
+(3 to 5)% to Summoned Minion Life
+(6 to 8)% to Summoned Minion Damage
Maximum Mana +(21 to 25)%
Elemental Resists +(5 to 7)%
Socketed (2)
One-Hand Damage: (28 - 31) to (33 - 36)
(Barbarian Only)
Required Level: 27
Required Strength: 124
Item Level: 40
Strength Damage Bonus: (0.14 per Strength)%
+2 to Barbarian Skill Levels
25% Attack Speed
25% Cast Speed
+(58 to 75)% Enhanced Damage
+(9 to 11)% to Summoned Minion Life
+(11 to 13)% to Summoned Minion Damage
Maximum Mana +(31 to 35)%
Elemental Resists +(8 to 10)%
Socketed (4)
One-Hand Damage: (59 - 64) to (71 - 77)
(Barbarian Only)
Required Level: 46
Required Strength: 244
Item Level: 59
Strength Damage Bonus: (0.14 per Strength)%
+3 to Barbarian Skill Levels
35% Attack Speed
35% Cast Speed
+(92 to 109)% Enhanced Damage
+(15 to 17)% to Summoned Minion Life
+(16 to 18)% to Summoned Minion Damage
Maximum Mana +(41 to 45)%
Elemental Resists +(11 to 12)%
Socketed (5)
One-Hand Damage: (77 - 83) to (94 - 101)
(Barbarian Only)
Required Level: 55
Required Strength: 482
Item Level: 85
Strength Damage Bonus: (0.14 per Strength)%
+(3 to 4) to Barbarian Skill Levels
40% Attack Speed
40% Cast Speed
+(109 to 126)% Enhanced Damage
+(18 to 20)% to Summoned Minion Life
+(19 to 20)% to Summoned Minion Damage
Maximum Mana +(46 to 50)%
Elemental Resists +(13 to 15)%
Socketed (6)
Skeld's Battlesong
or 
Skeld's Battlesong
Kriegsmesser (Sacred)
One-Hand Damage: 53 to 57
(Barbarian Only)
Required Level: 100
Required Strength: 642
Item Level: 105
Strength Damage Bonus: (0.14 per Strength)%
Guardian Spirits Inherit 100% of Your Deadly Strike
+(3 to 5) to Barbarian Skill Levels
1% Base Block Chance
+(13 to 25)% to Summoned Minion Damage
+(25 to 75) to Vitality
Regenerate Mana +(10 to 30)%
Maximum Lightning Resist +(1 to 2)%
Socketed (6)
Kriegsmesser (Sacred)
One-Hand Damage: 53 to 57
(Barbarian Only)
Required Level: 100
Required Strength: 642
Item Level: 105
Strength Damage Bonus: (0.14 per Strength)%
Guardian Spirits Inherit 100% of Your Deadly Strike
+(3 to 5) to Barbarian Skill Levels
1% Base Block Chance
+(13 to 25)% to Summoned Minion Damage
+(25 to 75) to Vitality
Regenerate Mana +(10 to 30)%
Maximum Lightning Resist +(1 to 2)%
Socketed (6)
Gladiator's Rage
. You can probably skip the tainted craft but if your SSF and desperate for an upgrade this is slightly more damgae than Uldyssian's Legion
Gladiator's Rage
Spatha (Sacred)
One-Hand Damage: 46 to 48
(Barbarian Only)
Required Level: 100
Required Strength: 500
Item Level: 120
Strength Damage Bonus: (0.14 per Strength)%
4% Chance to cast level 16 Bloodlust when Struck
+(2 to 4) to Barbarian Skill Levels
+(1 to 2) to Maximum Barbarian Minions
40% Cast Speed
+(50 to 75)% to Summoned Minion Life
+50% to Summoned Minion Damage
+50% to Summoned Minion Resistances
(10 to 30)% Gold Find
(10 to 30)% Magic Find
+(3 to 5) to Light Radius
Socketed (3)
Spatha (Sacred)
One-Hand Damage: 46 to 48
(Barbarian Only)
Required Level: 100
Required Strength: 500
Item Level: 120
Strength Damage Bonus: (0.14 per Strength)%
4% Chance to cast level 16 Bloodlust when Struck
+(2 to 4) to Barbarian Skill Levels
+(1 to 2) to Maximum Barbarian Minions
40% Cast Speed
+(50 to 75)% to Summoned Minion Life
+50% to Summoned Minion Damage
+50% to Summoned Minion Resistances
(10 to 30)% Gold Find
(10 to 30)% Magic Find
+(3 to 5) to Light Radius
Socketed (3)
Shield: I feel like the weapon Selection here is very good but if you need extra defense or happen to find a
Toraja's Champion
it is a very good item
Toraja's Champion
Gilded Shield (Sacred)
Defense: (7944 - 8978) to (9847 - 11129)
Chance to Block: 1%
(Barbarian Only)
Required Level: 100
Required Strength: 700
Item Level: 105
+(2 to 3) to Barbarian Skill Levels
+2 to Maximum Barbarian Minions
+(30 to 38)% Damage to Protector Spirit Bloodlust
40% Cast Speed
+(21 to 25)% to Summoned Minion Damage
+(115 to 143)% Enhanced Defense
+500 to Life
+250 to Mana
Elemental Resists +10%
+10 Life on Striking
+(6 to 7) Mana on Striking
Socketed (4)
Gilded Shield (Sacred)
Defense: (7944 - 8978) to (9847 - 11129)
Chance to Block: 1%
(Barbarian Only)
Required Level: 100
Required Strength: 700
Item Level: 105
+(2 to 3) to Barbarian Skill Levels
+2 to Maximum Barbarian Minions
+(30 to 38)% Damage to Protector Spirit Bloodlust
40% Cast Speed
+(21 to 25)% to Summoned Minion Damage
+(115 to 143)% Enhanced Defense
+500 to Life
+250 to Mana
Elemental Resists +10%
+10 Life on Striking
+(6 to 7) Mana on Striking
Socketed (4)
Helm:
Morthwyrtha

In later section I will talk about build options but with a specific setup 

Morthwyrtha
Barbarian Helms
'IoSur'
Runeword Level: 75
+(3 to 4) to Barbarian Skill Levels
+1 to Maximum Barbarian Minions
+3 to Banish
+(16 to 20)% to Summoned Minion Damage
+(50 to 75)% to Summoned Minion Attack Rating
Regenerate Mana +(6 to 10)%
Barbarian Helms
'IoSur'
Runeword Level: 75
+(3 to 4) to Barbarian Skill Levels
+1 to Maximum Barbarian Minions
+3 to Banish
+(16 to 20)% to Summoned Minion Damage
+(50 to 75)% to Summoned Minion Attack Rating
Regenerate Mana +(6 to 10)%
Undead Crown
is very good
Undead Crown
Crown (Sacred)
Defense: 4437 to 4914
Required Level: 110
Required Strength: 675
Item Level: 120
12% of Minion Damage Increases Added as Deadly Strike
40% of Minion Life Increases Added as Bonus to Defense
Deal No Crushing Blows
Orb Effects Applied to this Item are Doubled
50% Attack Speed
+200% Enhanced Defense
Socketed (4)
Crown (Sacred)
Defense: 4437 to 4914
Required Level: 110
Required Strength: 675
Item Level: 120
12% of Minion Damage Increases Added as Deadly Strike
40% of Minion Life Increases Added as Bonus to Defense
Deal No Crushing Blows
Orb Effects Applied to this Item are Doubled
50% Attack Speed
+200% Enhanced Defense
Socketed (4)
Body:
Akara's Robe (Sacred)
--> Tainted Craft +2 skills and good Minion damage--> 
Akara's Robe
Quilted Armor (Sacred)
Defense: 2763 to 2831
Required Level: 80
Required Strength: 350 to 395
Item Level: 255
+1 to All Skills
+500 Defense
+(31 to 50) to all Attributes
+200 to Life
Elemental Resists +(31 to 40)%
Requirements -(21 to 30)%
Socketed (6)
Quilted Armor (Sacred)
Defense: 2763 to 2831
Required Level: 80
Required Strength: 350 to 395
Item Level: 255
+1 to All Skills
+500 Defense
+(31 to 50) to all Attributes
+200 to Life
Elemental Resists +(31 to 40)%
Requirements -(21 to 30)%
Socketed (6)
Goetia Plate
or 
Goetia Plate
Full Plate Mail (Sacred)
Defense: (8467 - 9339) to (10376 - 11445)
Required Level: 100
Required Strength: 700
Item Level: 120
+3 to All Skills
+1 to Maximum Necromancer Minions
+(151 to 200)% to Summoned Minion Life
+(51 to 75)% to Summoned Minion Damage
+(172 to 200)% Enhanced Defense
+100 Life Regenerated per Second
+750 to Life
+375 to Mana
-4 to Light Radius
Socketed (6)
Full Plate Mail (Sacred)
Defense: (8467 - 9339) to (10376 - 11445)
Required Level: 100
Required Strength: 700
Item Level: 120
+3 to All Skills
+1 to Maximum Necromancer Minions
+(151 to 200)% to Summoned Minion Life
+(51 to 75)% to Summoned Minion Damage
+(172 to 200)% Enhanced Defense
+100 Life Regenerated per Second
+750 to Life
+375 to Mana
-4 to Light Radius
Socketed (6)
Thelema





Thelema
Body Armors
'LewIuHel'
Runeword Level: 110
+4 to All Skills
55% Cast Speed
+(80 to 95)% to Summoned Minion Damage
+(200 to 250)% to Summoned Minion Attack Rating
+(172 to 200)% Enhanced Defense
+(120 to 150) to Vitality
15% to Vitality
+(101 to 125) Mana when Struck by an Enemy
Body Armors
'LewIuHel'
Runeword Level: 110
+4 to All Skills
55% Cast Speed
+(80 to 95)% to Summoned Minion Damage
+(200 to 250)% to Summoned Minion Attack Rating
+(172 to 200)% Enhanced Defense
+(120 to 150) to Vitality
15% to Vitality
+(101 to 125) Mana when Struck by an Enemy
Belt: Honorific --> Tainted Craft +2 Barb Skills and Good Minion Damage
Gloves:
Prodigy

--> Tainted Craft 

Prodigy
Gloves
'AmnLum'
Runeword Level: 45
+1 to All Skills
+(10 to 15)% to Summoned Minion Damage
+5% to Summoned Minion Resistances
+93 Defense
(11 to 20)% to Strength
Regenerate Mana +(10 to 15)%
Fire Resist +(3 to 8)%
Lightning Resist +(3 to 8)%
Cold Resist +(3 to 8)%
Poison Resist +(28 to 33)%
Gloves
'AmnLum'
Runeword Level: 45
+1 to All Skills
+(10 to 15)% to Summoned Minion Damage
+5% to Summoned Minion Resistances
+93 Defense
(11 to 20)% to Strength
Regenerate Mana +(10 to 15)%
Fire Resist +(3 to 8)%
Lightning Resist +(3 to 8)%
Cold Resist +(3 to 8)%
Poison Resist +(28 to 33)%
Boots: Honorific --> Any boots with + all skills --> Tainted Craft
Ring: Rare with +1 skills and Minion damage. Getting Minion life is a nice plus. If you have TG to dump you can go
Ring of Regha
Lotto +1 with minion damage UMOs. 
Ring of Regha
Ring
Item Level: 1
Adds 3-5 Damage
+5% to Spell Damage
+(5 to 15) to Strength
+(5 to 15) to Dexterity
Elemental Resists +10%
Ring
Item Level: 1
Adds 3-5 Damage
+5% to Spell Damage
+(5 to 15) to Strength
+(5 to 15) to Dexterity
Elemental Resists +10%
Der Nebelring
Are great if you need more survivability without losing too much damage.
Der Nebelring
Ring
Required Level: 110
Item Level: 105
+(20 to 30)% to Summoned Minion Life
+15% to Summoned Minion Damage
+1000 Defense
+400 to Life
Physical Resist (4 to 6)%
+(40 to 50) Life after each Kill
+2 to Light Radius
Ring
Required Level: 110
Item Level: 105
+(20 to 30)% to Summoned Minion Life
+15% to Summoned Minion Damage
+1000 Defense
+400 to Life
Physical Resist (4 to 6)%
+(40 to 50) Life after each Kill
+2 to Light Radius
Amulet: Rare +4 skills lucked with minion damage
Others:
Corrupted Wormhole
is best to use Barb Skills but life if you're lazy. If your a go getter build both skills and life. Use the skills to summon and life otherwise. Its possible Vit might give more life than life wormhole but I have not tested.
Corrupted Wormhole
Required Level: 100
Keep in Inventory to Gain Bonus
Required Level: 100
Keep in Inventory to Gain Bonus
Sleep charm use
Judgement Day Trophy
. 
Judgement Day Trophy
Cube with the Crystalline Flame Medallion to Add Bonus
5% to All Attributes
- Divine Mandate -
Cube with the Crystalline Flame Medallion to Add Bonus
5% to All Attributes
- Divine Mandate -
I think
Relic (Summon Frostwalker)

Relic
Required Level: 75
+(9 to 16) to Summon Frostwalker
Maximum Cold Resist +1%
Gain Exodia while Carrying All Summon Trio Relics
(Summon Frostwalker - Summon Glowing Fungus - Summon Sinner)
Exodia
Summon One Extra Minion With Each Cast
+100% to Summoned Minion Damage
+100% to Summoned Minion Attack Rating
+666 to Life
Required Level: 75
+(9 to 16) to Summon Frostwalker
Maximum Cold Resist +1%
Gain Exodia while Carrying All Summon Trio Relics
(Summon Frostwalker - Summon Glowing Fungus - Summon Sinner)
Exodia
Summon One Extra Minion With Each Cast
+100% to Summoned Minion Damage
+100% to Summoned Minion Attack Rating
+666 to Life
Relic (Summon Glowing Fungus)

Relic
Required Level: 75
+(9 to 16) to Summon Glowing Fungus
Maximum Lightning Resist +1%
Gain Exodia while Carrying All Summon Trio Relics
(Summon Frostwalker - Summon Glowing Fungus - Summon Sinner)
Exodia
Summon One Extra Minion With Each Cast
+100% to Summoned Minion Damage
+100% to Summoned Minion Attack Rating
+666 to Life
Required Level: 75
+(9 to 16) to Summon Glowing Fungus
Maximum Lightning Resist +1%
Gain Exodia while Carrying All Summon Trio Relics
(Summon Frostwalker - Summon Glowing Fungus - Summon Sinner)
Exodia
Summon One Extra Minion With Each Cast
+100% to Summoned Minion Damage
+100% to Summoned Minion Attack Rating
+666 to Life
Relic (Summon Sinner)
is the best combo here.
Relic
Required Level: 75
+(9 to 16) to Summon Sinner
Maximum Fire Resist +1%
Gain Exodia while Carrying All Summon Trio Relics
(Summon Frostwalker - Summon Glowing Fungus - Summon Sinner)
Exodia
Summon One Extra Minion With Each Cast
+100% to Summoned Minion Damage
+100% to Summoned Minion Attack Rating
+666 to Life
Required Level: 75
+(9 to 16) to Summon Sinner
Maximum Fire Resist +1%
Gain Exodia while Carrying All Summon Trio Relics
(Summon Frostwalker - Summon Glowing Fungus - Summon Sinner)
Exodia
Summon One Extra Minion With Each Cast
+100% to Summoned Minion Damage
+100% to Summoned Minion Attack Rating
+666 to Life
Relic (Defender Spirit)

Relic
Required Level: 75
+1 Extra Defender Spirit
+(22 to 35) to Defender Spirit
+25% to Summoned Minion Life
+5% to Summoned Minion Damage
Spirit Walk Heals an Additional 5% Maximum Life while Carrying All Shaman Relics
(Defender Spirit - Guardian Spirit - Protector Spirit)
Required Level: 75
+1 Extra Defender Spirit
+(22 to 35) to Defender Spirit
+25% to Summoned Minion Life
+5% to Summoned Minion Damage
Spirit Walk Heals an Additional 5% Maximum Life while Carrying All Shaman Relics
(Defender Spirit - Guardian Spirit - Protector Spirit)
Relic (Guardian Spirit)

Relic
Required Level: 75
+1 Extra Guardian Spirit
+(22 to 35) to Guardian Spirit
+25% to Summoned Minion Damage
Spirit Walk Heals an Additional 5% Maximum Life while Carrying All Shaman Relics
(Defender Spirit - Guardian Spirit - Protector Spirit)
Required Level: 75
+1 Extra Guardian Spirit
+(22 to 35) to Guardian Spirit
+25% to Summoned Minion Damage
Spirit Walk Heals an Additional 5% Maximum Life while Carrying All Shaman Relics
(Defender Spirit - Guardian Spirit - Protector Spirit)
Relic (Protector Spirit)
isnt bad for stats and provide some nice sustain as well as extra spirits that will help with clear and duration of Spirit reave
Relic
Required Level: 75
+1 Extra Protector Spirit
+(12 to 20)% Damage to Protector Spirit Bloodlust
+(15 to 25) to Protector Spirit
+25% to Summoned Minion Resistances
Spirit Walk Heals an Additional 5% Maximum Life while Carrying All Shaman Relics
(Defender Spirit - Guardian Spirit - Protector Spirit)
Required Level: 75
+1 Extra Protector Spirit
+(12 to 20)% Damage to Protector Spirit Bloodlust
+(15 to 25) to Protector Spirit
+25% to Summoned Minion Resistances
Spirit Walk Heals an Additional 5% Maximum Life while Carrying All Shaman Relics
(Defender Spirit - Guardian Spirit - Protector Spirit)
Individual relics that are nice:
Relic (Champions of the Sun)
The resist aura is very nice especially when pushing into high end rifts
Relic
Required Level: 75
+(15 to 26) to Champions of the Sun
+(11 to 15)% to Summoned Minion Damage
Elemental Resists +(10 to 15)%
Required Level: 75
+(15 to 26) to Champions of the Sun
+(11 to 15)% to Summoned Minion Damage
Elemental Resists +(10 to 15)%
Relic (Overlord)
Gives an extra of each spirit plus some bonus damage
Relic
Required Level: 75
+(5 to 13) to Overlord
+20% to Summoned Minion Damage
Maximum Life +(2 to 3)%
Required Level: 75
+(5 to 13) to Overlord
+20% to Summoned Minion Damage
Maximum Life +(2 to 3)%
Relic (Blood Skeleton)
The Grim Vision aura gives some not bad extra damage
Relic
Required Level: 75
Blood Skeleton: +5 to Grim Vision Aura
+(13 to 25) to Blood Skeleton
+(5 to 10)% to Summoned Minion Resistances
Required Level: 75
Blood Skeleton: +5 to Grim Vision Aura
+(13 to 25) to Blood Skeleton
+(5 to 10)% to Summoned Minion Resistances
Relic (Ice Elementals)
provides a nice amount of damage and defense
Relic
Required Level: 75
+1 Extra Ice Elemental
+(15 to 32) to Ice Elementals
+(31 to 40)% to Summoned Minion Damage
+1000 Defense
Required Level: 75
+1 Extra Ice Elemental
+(15 to 32) to Ice Elementals
+(31 to 40)% to Summoned Minion Damage
+1000 Defense
Relic (Iron Golem)
Minion attack rating is very nice plus magic find
Relic
Required Level: 75
+(11 to 21) to Iron Golem
+100% to Summoned Minion Attack Rating
(11 to 15)% Magic Find
Required Level: 75
+(11 to 21) to Iron Golem
+100% to Summoned Minion Attack Rating
(11 to 15)% Magic Find
Any other relic with minion stats or that gives a summon is of course useable but I think it would be blow any of the above
Mystic Orb Priority:
Minion Damage --> Minion Resists until 75% --> Minion life --> Magic find
Socket slots:
Hel Runes are fine for starting but as you have spare Arcane crystals you will want to Craft +11 Minion damage Jewels preferably with Minion life also on them.
Build Options:
I recommend using Rune Master to make the summoner as Tanky as possible. I have yet to have an issue with damage but Nephalem spirit is more damage. With Nephalem spirit you probably dont need 100% str but if you want even more damage with Nephalem spirit you can spec 100% str for stats. Nephalem spirit is notably powerful in Fautz because Necro bots resist physical damage and deal mostly physical damage.
In theory dumping points into Bear stance can be very valuable as well but I have not found the need. Maybe if your HC
I think it goes without saying but if you max your physical resist elsewhere (Nephalem spirit, Gear, Bear stance) Points in tenacity are wasted. Spend them elsewhere
Defender spirits are pretty good at tanking even with 1 point invested. It may be worth considering only going one point. This will reduce your spirit reave damage as well as some of the AOE damage of the Defender spirits but is worth considering if you want more Physical resist from Bear stance, life from ancient blood or stats from Mountain king.
Thundergod doesnt do alot feel free to place this point elsewhere. I find the occasional stun nova nice but its not game changing
It will hurt your sustain but once you have teleport from void charm you could possibly cut spirit walk
I have not tested this but in theory instead of putting points into Endurance and Ancient Blood you could spend points into Wind carver tree for more sustain or defense.
For Scosc or late game rifts you can AMP your Guardian spirits to an entirely new power level By using
Undead Crown
+ 
Undead Crown
Crown (Sacred)
Defense: 4437 to 4914
Required Level: 110
Required Strength: 675
Item Level: 120
12% of Minion Damage Increases Added as Deadly Strike
40% of Minion Life Increases Added as Bonus to Defense
Deal No Crushing Blows
Orb Effects Applied to this Item are Doubled
50% Attack Speed
+200% Enhanced Defense
Socketed (4)
Crown (Sacred)
Defense: 4437 to 4914
Required Level: 110
Required Strength: 675
Item Level: 120
12% of Minion Damage Increases Added as Deadly Strike
40% of Minion Life Increases Added as Bonus to Defense
Deal No Crushing Blows
Orb Effects Applied to this Item are Doubled
50% Attack Speed
+200% Enhanced Defense
Socketed (4)
Skeld's Battlesong
and its not even that expensive. This might not be the best boss killer as you will lose some damage from Spirit Reave. If going this option try to stack enough deadly strike from sources to hit that magic 100%. Remember Deadly strike from weapons only applies from the main hand
Skeld's Battlesong
Kriegsmesser (Sacred)
One-Hand Damage: 53 to 57
(Barbarian Only)
Required Level: 100
Required Strength: 642
Item Level: 105
Strength Damage Bonus: (0.14 per Strength)%
Guardian Spirits Inherit 100% of Your Deadly Strike
+(3 to 5) to Barbarian Skill Levels
1% Base Block Chance
+(13 to 25)% to Summoned Minion Damage
+(25 to 75) to Vitality
Regenerate Mana +(10 to 30)%
Maximum Lightning Resist +(1 to 2)%
Socketed (6)
Kriegsmesser (Sacred)
One-Hand Damage: 53 to 57
(Barbarian Only)
Required Level: 100
Required Strength: 642
Item Level: 105
Strength Damage Bonus: (0.14 per Strength)%
Guardian Spirits Inherit 100% of Your Deadly Strike
+(3 to 5) to Barbarian Skill Levels
1% Base Block Chance
+(13 to 25)% to Summoned Minion Damage
+(25 to 75) to Vitality
Regenerate Mana +(10 to 30)%
Maximum Lightning Resist +(1 to 2)%
Socketed (6)
Uber Guide
HORROR UNDER TRISTRAM
► Show Spoiler
INVASION
► Show Spoiler
DEATH PROJECTOR
► Show Spoiler
INFERNAL MACHINE
► Show Spoiler
THE BINDING OF BAAL
► Show Spoiler
HORAZON'S SANCTUM
► Show Spoiler
AKARAT
► Show Spoiler
ASSAULT ON MOUNT ARREAT
► Show Spoiler
LORD ALDRIC JITAN
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INQUISITOR OF THE TRIUNE
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BULL PRINCE RODEO
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RATHMA SQUARE
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LEGACY OF BLOOD
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THE VEILED PROPHET
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HEART OF SIN
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INVASION II
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JUDGEMENT DAY
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TWIN SEAS
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QUOV TSIN
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KINGDOM OF SHADOW
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BANISHER OF LIGHT
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LEGION OF THE DAMNED
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TORAJA
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EVE OF DESTRUCTION
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LORD OF LIES
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GHOSTS OF OLD BREMMTOWN
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YSHARI SANCTUM
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XAZAX
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ASTROGHA
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NYMYR'S LIGHT
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SPIRIT WORLD
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INVASION III
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THE VOID
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NEPHALEM'S SACRIFICE
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ARCHBISHOP LAZARUS
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Breakpoints: https://dev.median-xl.com/speedcalc/ but for the most part wolf passive plus immortal takes care of them
Credits: Pokemancer Guide viewtopic.php?f=40&t=56611 , Old Summon Barb Guide viewtopic.php?f=40&t=28125
Maybe Ill come back and make updates. Or not<3. I plan to add some details about each uber.