Apocalypse Demon [Hour of Devastation Prerelease Promos] Wolf Horror if you activate a Spell/Trap

if you activate a Spell/Trap Card or effect while this card is in your GY (except during the Damage Step): You can Special Summon this card

Special Summon up to 3 copies of "Blue-Eyes White Dragon" from your Deck

You can only use each effect of "Vampire Retainer" once per turn

Set: Flaming Eternity Card type: Effect Monster Rarity: Ultimate Rare Attack: 2400 Defense: 1000 When this card is Tribute Summoned successfully

In addition to great new cards for a variety of themes

Apocalypse Demon [Hour of Devastation Prerelease Promos] Wolf Horror if you activate a Spell/TrapSet: Hour of Devastation Prerelease Promos Type: Creature Demon Rarity: Rare Cost: {4}{B}{B} Flying Apocalypse Demon's power and toughness are each equal to the number of cards in your graveyard. At the beginning of your upkeep, tap Apocalypse Demon unless you sacrifice another creature.