Once per turn, during your Main Phase, you can equip this card to a Machine-Type monster you control as an Equip Card, OR unequip it to Special Summon this card in face-up Attack Position. While equipped to a monster by this effect, if the equipped monster destroys an opponent's monster by battle, select and Special Summon 1 Level 4 or lower LIGHT Machine-Type monster from your Graveyard. (A monster can only be equipped with 1 Union Monster at a time. If the equipped monster would be destroyed, destroy this card instead.)
![Trigon [TSHD-EN031] Common](http://tokenmtg.com/cdn/shop/products/73a2c2ed-bfcd-5028-b10a-5cdf8141cf57_baa2d97e-9ccd-47e8-b773-3300f5d740dd.png?v=1696988399)
![Trigon [TSHD-EN031] Common](http://tokenmtg.com/cdn/shop/products/73a2c2ed-bfcd-5028-b10a-5cdf8141cf57_baa2d97e-9ccd-47e8-b773-3300f5d740dd.png?crop=center&height=430&v=1696988399&width=430)