Ripping Sensation

as an extra cost to cast this spell, sacrifice a creature with Toughness less than 10
Target Creature gets -0/-10, if target creature were to die it gets exiled and you gain life equal to its Toughness
when I saw the man, I thought he was normal like all of us, but then he just... ripped his skin right off, we don't know why he did it, but its far too late now...
-Townsmen, Lindon Groth