Krovikan Horror [Alliances]

Krovikan Horror [Alliances]Set: Alliances Type: Creature Horror Spirit Rarity: Rare Cost: {3}{B} At the beginning of the end step, if Krovikan Horror is in your graveyard with a creature card directly above it, you may return Krovikan Horror to your hand. {1}, Sacrifice a creature: Krovikan Horror deals 1 damage to any target.

Then each creature you control becomes a Phyrexian in addition to its other types

Set: Ikoria: Lair of Behemoths Type: Legendary Creature — Elemental Dinosaur Cat Rarity: Mythic Cost: {U}{R}{W} Mutate {1}{W/U}{R}{R} (If you cast this spell for its mutate cost

Set: Secret Lair Drop Series Type: Legendary Creature — Dragon Rarity: Mythic Cost: {5}{G}{G} Flying

Set: March of the Machine Promos Type: Creature — Faerie Rogue Rarity: Rare Cost: {1}{U} Flash

Set: EX: Sandstorm Type: Colorless Rarity: Ultra Rare Retreat cost: Colorless

It was burned and broken

Set: POP Series 2 Type: Psychic Rarity: Ultra Rare Retreat cost: Colorless

you may pay {r} instead

Set: Sun & Moon: Guardians Rising Type: Metal Rarity: Secret Rare Retreat cost: Colorless

When Serra Avatar is put into a graveyard from anywhere

Set: XY: Roaring Skies Type: Dragon Rarity: Ultra Rare Retreat cost: Colorless

each other creature gets -1/-1 until end of turn