Being a great supportive feat is also a suicidal feat that in many situations the warlock will end up dying to help the party stay alive; for example trobriand's ultimate attack is unavoidable, having 4 allies' 25% damage taken redirected to you is very chaotic; another example is ras sni' final attack if at least 1 soul missed.
This feat could be an awesome choice for 5 tier feat if it is a bit improved in my opinion, maybe having more than 80% hit points will resist all redirected damage, and below 80% hit points redirected damage is 100% deflected? It's just a suggestion, even though it's good to sacrifice oneself so the others stay alive, its still a risky move as they won't have heals at the last stand.
0
Comments
It could be a very cool, even class-defining feat if they could tweak it properly. Sharing party-buster damage would even be viable if the "transferred" damage were stored in the form of (unremovable) DoT stacks like the old Creeping Death capstone, allowing the Warlock a chance to recover.
Contagion - Cleric
Testament - Wizard
Pestilence - Ranger
Dominion - Paladin
NIGHTSWATCH