Union Rider

Level 2 WIND/Machine Effect
1000 ATK / 1000 DEF

You can take control of up to 1 Union Monster that is currently a monster on your opponent's side of the field, and equip it to this card. The Union Monster that is equipped to this card cannot be changed back to a monster using its own effect.

Rulings – Yugipedia

Printings:

Magician's Force: MFC-018 (Common) - 2003-10-10
Dark Revelation Volume 1: DR1-EN073 (Common) - 2005-03-19

Prices:

Cardmarket: 0.02 €
TCGplayer: $ 0.15