Until end of turn, whenever a Devil card enters the battlefield, if you have 16 or more life, black creatures have protection from Skeletons until end of turn.
Devil's Act {3RR} |Instant| Put a +1/+1 counter on target Elemental. / Until end of turn, whenever a Devil card enters the battlefield, if you have 16 or more life, black creatures have protection from Skeletons until end of turn.