Copycat

Level 1 LIGHT/Spellcaster Effect
0 ATK / 0 DEF

If this card is Summoned: Target 1 face-up monster your opponent controls; this card's ATK/DEF become equal to that monster's original ATK/DEF.

Rulings – Yugipedia

Printings:

Limited Edition 1: JUMP-EN020 (Ultra Rare) - 2008-01-16
Retro Pack: RP01-EN092 (Secret Rare) - 2008-07-08
Starter Deck: Yu-Gi-Oh! 5D's: 5DS1-EN015 (Common) - 2008-08-05
Dark Legends: DLG1-EN093 (Rare) - 2008-11-21
Duel Terminal 6a: DT06-EN012 (Duel Terminal Normal Parallel Rare) - 2012-02-03
Battle Pack 2: War of the Giants: BP02-EN058 (Common) - 2013-06-28
Battle Pack 2: War of the Giants: BP02-EN058 (Mosaic Rare) - 2013-06-28
Legendary Collection 4: Joey's World Mega Pack: LCJW-EN045 (Common) - 2013-10-11
Speed Duel Starter Decks: Duelists of Tomorrow: SS02-ENB09 (Common) - 2019-01-24
Speed Duel Demo Deck: DEM5-EN006 (Common) - 2019-06-08
Speed Duel Demo Deck 2020: DEM6-EN014 (Common) - 2020-01-01

Prices:

Cardmarket: 0.25 €
TCGplayer: $ 0.46