Up for sale is the weakening Call for Blood, a common card from the Betrayers of Kamigawa expansion of Magic: the Gathering. These are the original, black-bordered, English version.
Call for Blood: Instant (Arcane); as an additional cost to play Call for Blood, sacrifice a Creature; target Creature gets -X/-X until end of turn, where X is the sacrificed Creature's power; casting cost 4B.
These cards are in Very Fine to Near Mint condition.