Typo (missing an 'equal')

Interesting colour flip though - black usually sacrifices things to hurt its enemies. This saves things (potentially its enemies things).

One big issue is that this will never actually have a downside. You'll either use it to win the game, on one of your own creatures that is blocking - or on an opponents big creature at the end of their turn when they cannot do anything useful with it.

Which is a shame. It might be more interesting if this had to target an opponents creature, and/or was sorcery speed?

I wanted a black indestructible card, but I didn't know what to do from there. The opposite could maybe work (which seems more white-green) and have you gain life equal to the creature's toughness?