From Diablo 3 Database
You and your allies have a 30% chance to be healed for 279 - 341 Life when using melee attacks on an enemy under the effects of Mantra of Conviction
Does this skill have any sort of internal cooldown, or limit to how many times it can occur in any way?
In other words, can I gain the effect of this rune for any potential hit on an enemy? This would make melee AoE attacks with many targets quite effective for self healing.