Prometheus, King of the Shadows [FOTB-EN063] Secret Rare Grass[+10] sacrifice it unless you exile

sacrifice it unless you exile another Faerie you control

Set: XY: Base Set Type: Water Rarity: Holo Rare Retreat cost: Colorless

If a spell cast this way would be put into a graveyard this turn

Set: Rivals of Ixalan Prerelease Promos Type: Legendary Enchantment Rarity: Rare Cost: {1}{G}{U} At the beginning of combat on your turn

Prometheus, King of the Shadows [FOTB-EN063] Secret Rare Grass[+10] sacrifice it unless you exileSet: Force of the Breaker Card type: Effect Monster Rarity: Secret Rare Attack: 1200 Defense: 800 When you Normal Summon this card, remove from play any number of DARK monsters in your Graveyard. This card gains 400 ATK for each removed card, until the End Phase of this turn.