Delta Union Monsters

Delta Union Monsters are a variation of Union Monsters.

One of aspects of Delta Union Monsters that make them different from regular Union Monsters is that they can equip and unequip their respective target during either player's turn, similar to how Synchro Tuner Monsters can be used for a Synchro Summon at all time. They also typically gain an effect when they unequip.

However, one of the drawbacks that Delta Union Monsters have is that if they are equipped to monster and that monster would be destroyed, they cannot protect their target from destruction. But, if you haven't used its effect that turn, it can save itself from destruction by Special Summoning itself.

The only Delta Union Monster at the moment is Zilch.