Diabolic Intent (Invocation) [Amonkhet Invocations] Cleric instead prevent all combat damage

instead prevent all combat damage that would be dealt this turn by creatures your opponents control

Set: Planar Chaos Type: Instant Rarity: Rare Cost: {2}{R} Until end of turn

Set: Iconic Masters Type: Creature — Beast Rarity: Rare Cost: {3}{B}{G} Whenever Spiritmonger deals damage to a creature

And you thought Yawgmoth drove a hard bargain

Diabolic Intent (Invocation) [Amonkhet Invocations] Cleric instead prevent all combat damageSet: Amonkhet Invocations Type: Sorcery Rarity: Mythic Cost: {1}{B} As an additional cost to cast this spell, sacrifice a creature. Search your library for a card and put that card into your hand. Then shuffle your library.