Bat-

Flying At the beginning of each end step, if an opponent lost 3 or more life this turn, Augment {1}{B} ({1}{B}, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6ojzmnegyvpb1hmunlq392.