You can take a Union Monster that is currently a monster on your opponent''s side of the field, and equip it to this card. This monster can only be equipped with 1 Union Monster at a time. The Union Monster that is equipped to this card cannot be changes back to a monster by its own effect.
![Union Rider [MFC-018] Common](http://www.dungeonsandjavas.com/cdn/shop/products/a1ff8fec-efd6-5c37-8e16-de8579a2c180.png?v=1682553265&width=1445)
