Diabolic Curse

Indestructible
If you would gain life from another source, you lose that much life instead. If an opponent is dealt damage or loses life, instead you gain that much life from Diabolic Curse.
The dead man was veiled from us; not shut within a tomb, but lightly strewn with dust, as by the hand of one who shunned a curse.
-Sophocles, Antigone