I hate the name too.
Disloyal Zealot
B
Whenever you lose life, target opponent gains that much life.
3/3
A cycle of them with increasing costs, powers, and evasion can be created.
Maybe "Embittered Zealot" or "Disillusioned Zealot" instead? Or maybe something along the lines of "Awakened Dreamer"... I imagine the card representing a guy who dedicated his life to a cause then came to realize he'd been wasting his time. That sound roughly like what you had in mind?

might be too good for 3/3. I think it'd probably be strong but reasonable at 3/2 or 3/1.
Sounds like potentially fun times with False Cure. Maybe throw in Unspeakable Symbol/Flesh Reaver... Man, I loves me my janky combos.