Spellbook of Power

Normal Spell

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.

Rulings – Yugipedia

Printings:

Return of the Duelist: REDU-EN058 (Common) - 2012-08-24
Astral Pack Two: AP02-EN003 (Ultimate Rare) - 2013-04-19
Structure Deck: Order of the Spellcasters: SR08-EN028 (Common) - 2019-04-19

Prices:

Cardmarket: 0.14 €
TCGplayer: $ 0.30