Crafted shield for most part, try not to use 4xPo shield its gonna cut duration by too much.
Best in slot chest would be scales of the drake, I didn't have it at time of making this video.
You basically want pierce, poison spell dmg (for single target) and then defensive stats, dex for max block, physical resistance, defense.
Glad dominance 1pt, don't need to be maxed, unlike if you played around snake bite, then this skill boosts snake bite damage for each point. But for windform you want glad dominance mainly for block, and duration to snake stance, and then 1pt is enough.
1pt mountain king.
I'd max snake stance first and then put rest to windform, also almost maxing ancient blood.
Immortal high enough to cap its dodge.