Prometheus, King of the Shadows [FOTB-EN063] Secret Rare MTG Sealed when another monster's effect is

when another monster's effect is activated: You can Tribute 1 monster

Set: Duelist League Promo Card type: Normal Spell Rarity: Rare Target 2 Normal Monsters in your Graveyard

"Destiny Hero" and "Evil Hero" monsters you control (not counting this card)

Set: Shonen Jump Magazine Promos Card type: Effect Monster Rarity: Ultra Rare Attack: 1600 Defense: 1800 Your opponent cannot select another Spellcaster-Type monster of your side of the field as an attack target

remove 1 counter from this card at the end of the Damage Step

Prometheus, King of the Shadows [FOTB-EN063] Secret Rare MTG Sealed when another monster's effect isSet: 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.