Magic: the Gathering is a collectible card game created by Richard Garfield. In Magic, you play the role of a planeswalker who fights other planeswalkers for glory, knowledge, and conquest. Your deck of cards represents all the weapons in your arsenal. It contains the spells you know and the creatures you can summon to fight for you.

Card Name: Screeching Bat // Stalking Vampire

Cost: 2B

Color: Black

Card Type: Creature - Bat // Creature - Vampire

Power/Toughness: 2/2 // 5/5

Card Text:
Front
Flying
At the beginning of your upkeep, you may pay 2BB. If you do, transform Screeching Bat.
Back
At the beginning of your upkeep, you may pay 2BB. If you do, transform Stalking Vampire.