Overall, this might be my favorite contemporary TCG ABC build at the moment.
Epigonen, the Impersonation Invader is a crucial card which is why it's featured in so many of my current ABC builds. The card revitalizes otherwise dead hands and gives the deck a better degree of consistency, an expanded level of versatility, and allows for the creation of stronger first turn boards. Typically, you'll want to end on Dragon Buster, Dragoon, Masquerena, and Verte with this build.
You can even prevent a card like Veiler or Impermanence from negating Verte's effect by banishing Verte from the field with Dragon Buster. This variation of the deck utilizes Dragoon over DPE as I appreciate Dragoon's ability to aid in OTKing and its negation effect.
I'm still running a decent line-up of handtraps so as to increase one's ability to stand firm should one's opponent be going first. I'll always have a soft spot for the PSY-Framegear Gamma engine and am still running a copy of PSY-Framelord Omega given how devastating it can be for your opponent if you summon that card after negating a handtrap used against you on your own turn before you've summoned a monster.
While I prefer running two copies of Union Driver, I've decided to run only one in order take full advantage of the fact that Skill Drain is unlimited considering its interaction with ABC Dragon Buster, itself. I'm tempted to cut a copy of Skill Drain, though, or some other card in order to bring the deck back down to forty cards with a forty card build being another variation of this deck that I'm testing.
It's worth noting that running only one Union Driver isn't as detrimental anymore when you have Epigonen considering you can tribute a copy of Crush Wyvern via Epigonen's effect, special summon Union Driver with Wyvern's effect, and proceed to equip Driver to the token summoned by Epigonen before proceeding with the regular shenanigans.
The side deck is still up to major debate as is whether to utilize Pseudo Space, Cynet Universe, or Mystic Mine in the main deck. I prefer Pseudo Space, at the moment, since it serves as an extender which better enables the creation of optimal boards and aids in the accumulation of card advantage, a necessity given how both Dragon Buster and Dragoon require cards to discard to activate some of their most useful effects. There's also no fear if you give it to your opponent as a result of Set Rotation.
I also could see an argument for adjusting the extra deck a bit considering that while Omega is devastating, it only appears in quite specific scenarios whereas something like Knightmare Cerberus, Lambda, and Lyna the Light Charmer can be more consistently brought out with each of those cards having their own benefits.
I'm torn between Borrelsword and Avramax, with Borrelsword being a great boss monster to fall back on while Avramax is a great boss to summon with Masquerena in the event of your Dragon Buster being hit with a card like Called by the Grave after attempting to tag out. Borrelsword, on the other hand, is rather easy to summon with the aid of Epigonen especially when you run Link Spider.
Link Spider is a necessity in the extra deck, regardless of whether you run Borrelsword or Avaramax, considering it can be used to easily summon Verte so long as you open with Epigonen and any other summonable monster, even Ash Blossom, no matter how dead the rest of your hand is. . That last point also ties into another reason why I prefer Dragoon to DPE is because if you start with that aforementioned nearly dead hand, ending on a lone Dragoon is usually more difficult to get over than a lone DPE.
Link Spider is also necessary if you want to summon an Apollousa with four negates on your first turn which is a valid option if you either know or believe your opponent has Nibiru.