Spellbook of Power [SR08-EN028] Common

Target 1 Spellcaster monster you control; this turn, it gains 1000 ATK. And if it does, each time it destroys an opponent's monster by battle this turn: You can add 1 "Spellbook" Spell from your Deck to your hand. you can only activate 1 "Spellbook of Power" per turn.