While lacking in terms of attack, this deck offers many forms of card removal through the effects of it's fusion monsters. Monsters in this deck can also protect and give additional effects to each other by union equip.
Equipping union monsters is a big part of this deck's strategy. The monster that is equipped with a union monster gains protection from being destroyed, by destroying the union monster instead, and also gains additional effects based on the union monster equipped. Use Roll Out! to equip a union monster from your graveyard to an appropriate monster on the field.(Take note that a monster can only equip one union monster at a time.)
My current list. I'd play mirror walls instead of super rush and disruption if I had it. Most unsure on heavy mech support armor, might be better with something like powerful rebirth. Have considered trying more x, y, z and only 1 of v and w. Perhaps even with 3 dog tags, but at that point it's probably better with an all in vwxyz fusion deck.
Spell/Trap zones are a precious, limited resource in an XYZ deck and there's no easy way of getting rid of Frontline Base without throwing off your deck's balance. I usually just use this pattern:
- Set Y or Z and Roll Out on first turn
- Bring out X or Y and activate Roll Out on second turn
- Summon the first combination you possibly can, then recover the banished monsters with Union Scramble when you get the third piece
I usually run just one Luminous Spark and one Machine Assembly Line while I run 3 Frontline Bases. Having extra Continuous spells is good ammo for the fusions and with Roll Out!, if I sent B-Buster Drake as ammo for an effect, I can chain it to bring Drake back as a Spell protection shield
What to change:
Max out Extra Deck
+2 B-Buster Drake
I recommend running 3 Buster Drakes and at least two Roll Out! and two Union Scrambles. I've gotten so many swarming OTKs from those two cards alone. Plus Union Scramble's graveyard effect can replenish any XYZ fusions' effects for one extra measure
Man, wish we had ABC instead. Banishing stuff is way better.
I've been toying with this deck a lot recently. I think Heavy Mech Support Armor is not that good, and instead I use Heavy Mech Support Platform. This is because this deck generally lacks in the ATK stat. For this reason, I'm using only 2 Frontline Bases and 3 Roll Outs, since reviving Union monsters that buff the ATK of your monsters is so valuable. Roll out is the real MVP of this deck imo.
Also, I use Sleight of Hand as a skill, since it helps you get that much needed ATK, plus it gives something to discard if you have something to target with your fusions.
Also, no Enemy Controllers, use Sphere Kuribohs instead if you have them.