Gearspring Spirit

Level 8 DARK/Machine Effect Monster
100 ATK / 100 DEF

Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by having only Machine-Type monsters in your Graveyard (min. 1). Once per turn: You can target 1 face-up monster your opponent controls; its ATK becomes 0 until the End Phase.

Rulings – Yugipedia

Printings:

Duel Terminal 7b: DT07-EN058 (Duel Terminal Normal Parallel Rare) - 2013-02-01
Hidden Arsenal 7: Knight of Stars: HA07-EN038 (Super Rare) - 2013-04-26

Prices:

Cardmarket: 1.77 €
TCGplayer: $ 0.47