Sinister Serpent (Mosaic Rare) (BP02-EN015) - Battle Pack 2: War of the Giants Unlimited

During your Standby Phase, if this card is in your Graveyard: You can add it to your hand, also banish 1 “Sinister Serpent” from your Graveyard during your opponent’s next End Phase. You can only use this effect of “Sinister Serpent” once per turn..