taultunleashed

found this on another forum seems fairly legit

The Skill "Fire Bomb" with the Fire Pit Rune is bugged, it procs LoH everytime the 8% Damage ticks.
I had 200 LoH And i was being healed for 900 per mob.
It's only the pool left behind by the skill that procs it A LOT.
Enjoy

it procs LoH, i mean the RUNE effect procs life on hit for every enemy hit, regardless of when it was casted, if the pool hits something, it procs.

Yeah, this also works for Hydra. Hydra procs life on hit the same way, it's op as hell =)

Similar for the DH skill Caltrops with Jagged Spikes rune, you get LoH each time the damage ticks, and you can stack 5 for huge amounts of LoH.