I was of the understanding that things like HP burn and poison do not proc the passives on Ice Golen and Iron Twins. However! I keep wiping on twins because he will take a turn, burn, proc and then go retaliation into Doomsday. 

Idk how else him going once after the other is possible. It must be a mastery on someone? Driving me up the wall this is. Just want to get void day done. 

Edit: What about smite?