Spellbook of Eternity [ABYR-EN058] Rare Union Monster If only your opponent controls

If only your opponent controls a monster: You can banish this card from your GY

if this card is in the Graveyard because it was destroyed by a card effect and sent there this turn: You can Special Summon 1 Level 4 "Fire Fist" monster from your Deck

you can substitute this card for a Tribute(s)

When it destroys a monster your opponent controls by battle and sends it to the Graveyard

then target 1 "Cyber Dragon" in your Graveyard

Spellbook of Eternity [ABYR-EN058] Rare Union Monster If only your opponent controlsSet: Abyss Rising Card type: Normal Spell Rarity: Rare Target 1 of your banished "Spellbook" Spell Cards except "Spellbook of Eternity"; add that target to your hand. You can only activate 1 "Spellbook of Eternity" per turn.