Cauterize is an active regen you get a kill with an ability and you start regen while unbreakable is passive they cant be compared.
I think cauterize is ok as it gives the whole class the tools to stay in the fray for longer and be active if you are getting kills with your abilities.
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But its by far the most ridiculous regen perk. It's like life steal, claws of ahkahamara(?), and apothesis veil in one but only for health.
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Hunters have hungering blade, warlocks have the RAM and the solar shield. The only tweck i would do is give cauterize a cooldown time or the trigger as warlock with life steal, display a timer when cauterize is active so you cant stack it in multiple rapid kills, i doesnt matter since in rapid killing sprees you dont need regen but it will shut people saying its OP.
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Exactly.