Worm Opera [HA02-EN052] Super Rare Astral Pack 8 you can Tribute 1 DARK

you can Tribute 1 DARK monster to Special Summon this card from your hand

You must have 5 or more "Spellbook" Spell Cards with different names in your Graveyard to activate and to resolve this effect

depending on the number of monsters you Tributed from the field and from your hand this turn

You can only control 1 "Ancient Gear Reborn"

you can return both monsters to their owner's hands at the start of the Damage Step (without damage calculation)

Worm Opera [HA02-EN052] Super Rare Astral Pack 8 you can Tribute 1 DARKSet: Hidden Arsenal 2 Card type: Effect Monster Rarity: Super Rare Attack: 400 Defense: 800 FLIP: All face up monsters on the field lose 500 ATK, except Reptile Type "Worm" monsters.