Palliation Accord is a uncommon Enchantment card from Dissension (DIS), collector number 122. Current market price: $0.38 (foil $0.37), TCGplayer market prices via Scryfall.
Whenever a creature an opponent controls becomes tapped, put a palliation counter on this enchantment. Remove a palliation counter from this enchantment: Prevent the next 1 damage that would be dealt to you this turn.