Wind-Up Soldier

Level 4 EARTH/Warrior Effect
1800 ATK / 1200 DEF

During your Main Phase: You can increase this card's Level by 1 and ATK by 400, until the End Phase. This effect can only be used once while this card is face-up on the field.

Rulings – Yugipedia

Printings:

Generation Force: GENF-EN013 (Common) - 2011-08-16
Battle Pack: Epic Dawn: BP01-EN166 (Common) - 2012-05-24
Battle Pack: Epic Dawn: BP01-EN166 (Starfoil Rare) - 2012-05-24

Prices:

Cardmarket: 0.05 €
TCGplayer: $ 0.15