XYZ Combine →Used Deck

The Union has been a private property of the Machine for quite some time now, but since the hangar, the most useful unions have been sent to LIGHT even among the Machines, and the main reason for that is this game from the beginning. It is the existence of the XYZ series and its derivative monster group that brought the concept of union to the.
This time, late-starters such as ABC and VW are secondary, and it has become a powerful support for XYZ's fusion, and due to that fusion, everyone other than X is eliminated by its own effect, as well as the Union Driver. By doing so, the trigger is pulled and XYZ can be called from Deck.
It's a shame that it doesn't have a dedicated search method, even though it's a Continuous Spell that is placed at the core like the Hangar, but with the advent of this card, if you combine two bodies like in the original, the remaining Spell will be destroyed. I think it's wonderful that you found value in XY, XZ, and YZ, which had little significance because they couldn't be attached one by one later, and the performance of the main body was subtle, so I'll add one more point. I will consider it as this score.

Comprehensive evaluation: A card that makes it easier to connect to 《XYZ-Dragon Cannon》.
Even if there are only two of XYZ, it is possible to combine and recruit the missing parts, and return the two excluded by canceling the combination to make three.
If you search for Y with , summon it, and equip it with Z, you can connect smoothly.
Not only this, but condition (1) is his LIGHT Machine's union exclusion, so using 《Union Driver》will also trigger it.
You can exclude it with "Gold Sarcophagus", or even if you exclude it with ABC's Special Summon or "Cyber Eltanin", the trigger will be null.
It may not be impossible to connect to 《A-to-Z-Dragon Buster Cannon》.
As for the Fusion Monster that is returned to the Deck in (2), it doesn't matter, so you can also use 《Ready Fusion》etc. to return it from exclusion and connect it to an Xyz Summon.