Mad Archfiend

Level 4 DARK/Fiend Effect
1800 ATK / 0 DEF

If this card attacks a Defense Position monster, inflict piercing battle damage to your opponent. If this face-up Attack Position card is targeted for an attack: Change it to Defense Position.

Rulings – Yugipedia

Printings:

Crossroads of Chaos: CSOC-EN003 (Rare) - 2008-11-18
Duel Terminal 2: DT02-EN002 (Duel Terminal Normal Parallel Rare) - 2010-05-25
2-Player Starter Deck: Yuya & Declan: YS15-END06 (Common) - 2015-05-28
Dark Legion Starter Deck: YS15-ENL08 (Common) - 2015-05-29

Prices:

Cardmarket: 0.11 €
TCGplayer: $ 0.30