Up for sale is the damage-preventing Aven Redeemer, a common card from the Legions expansion of Magic: the Gathering. This is the original, black-bordered, English version.
Aven Redeemer: 2/2 White Creature (Bird Cleric) with Flying; tap Aven Redeemer to prevent the next 2 damage that would be dealt to target Creature or player this turn; casting cost 3W.
These cards are in Very Fine to Near Mint condition.