Prometheus, King of the Shadows [FOTB-EN063] Secret Rare Secret Utility Box Set: Gladiator's Assault Card type:

Set: Gladiator's Assault Card type: Fusion/Effect Monster Rarity: Secret Rare Attack: 2600 Defense: 2300 "Elemental Hero Sparkman"+ "Elemental Hero Bladedge" This monster cannot be Special Summoned except by Fusion Summon

except "Vaalmonica Scelta"

you can Special Summon 2 "Hydrogeddon"s and 1 "Oxygeddon" from your Graveyard

Set: Rarity Collection II (25th Anniversary Edition) Card type: Synchro/Effect Monster Rarity: Quarter Century Secret Rare Attack: 2800 Defense: 2200 1 Tuner + 1+ non-Tuner monsters Once per turn

Prometheus, King of the Shadows [FOTB-EN063] Secret Rare Secret Utility Box Set: Gladiator's Assault Card type:Set: 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.