chippvant wrote:I heard higher WDM like Time Strike is better for passive poison damage. Why ? Checked the doc but it doesn't explain very properly.
The way poison works in D2 is pretty strange, but the basic idea is that unlike all other types of weapon damage which hit instantly, poison does its damage over a period of time, and at any given time you only have a single poison "stack" active, which is based on the highest DPS of poison you hit the enemy with.
So let's say you have a weapon that does 100 fire damage and attacks once a second. You have two ways of applying this damage, one is a skill that hits twice per attack and has a WDM of 1, and the other is a skill that hits thrice per attack and has a WDM of 2/3. The net damage you'll do will be the same with both skills, since fire just does its damage immediately.
Now instead say you have a weapon that does 100 poison damage per second for 2 seconds, and use the same two skills. With the first skill if you attack once you'll do a total of 200 damage over 2 seconds (It doesn't matter that the skill hits twice, the second hit will just refresh the duration of the timer). With the second skill you'll do (2 / 3) * 200 = 133 damage over 2 seconds. The fact that you get an extra hit per attack is useless.
So we see that the primary factor determining how good a skill is for spreading poison is its WDM. (It turns out that you do actually still want the skill to hit multiple times per attack because poison skills tend to have a wide range of damage, and the more times you hit the enemy the more chance you have of hitting the maximum DPS, but the main factor is still the WDM).