Omnimon - Ace MegaZoo / OmniZoo

Meme Deck that actually works

The gameplay loop is to establish a level 5 early, digivolve to Lv 6 and then Omnimon Zwart, mill 3 cards and play two Lv 5s back who can then digivolve into more Lv 6s. Then repeat.

Tsunomon Digi-Egg is for additional draws when you evolve onto your hard played lvl 5s.

Rookies are for searching & memory gain. Sometimes you want to mitigate hard playing a Lv 5.

ST-15 Greymon is predominantly for security effect but also for use as a searchable Lv 4.

This deck kind of

Meme Deck that actually works

The gameplay loop is to establish a level 5 early, digivolve to Lv 6 and then Omnimon Zwart, mill 3 cards and play two Lv 5s back who can then digivolve into more Lv 6s. Then repeat.

Tsunomon Digi-Egg is for additional draws when you evolve onto your hard played lvl 5s.

Rookies are for searching & memory gain. Sometimes you want to mitigate hard playing a Lv 5.

ST-15 Greymon is predominantly for security effect but also for use as a searchable Lv 4.

This deck kind of expects the player to hard play Lv 5s sometimes, specifically Wisemon and Mamemon as they give you advantage on play. WereGarurumon can digivolve into either Wargreymon Ace or Metalgarurumon Ace and has Inherit <Blocker> (Crucial for the deck to have an longevity.)

Omnimon Zwart is best when your trash is set up; for this reason, Metalgarurumon Ace is inarguably the better the Lv 6, discarding whatever Lv 5s you want to play back off of Zwart. Once you do play them back off of Zwart, you gain more advantage through Mamemon or Wisemon.

Tech Choices:

Analog Youth reduces the [Overflow] penalty, searches unconditionally for Digimon, and possibly fills your trash with lvl 5s. Consider running 3 or 4 if you want more consistency. Also playable off of Mamemon to search the cards you stacked on top of your deck via its effect.

Kiyoshiro is a memory tamer and gives draws. Not super important, but getting memory choked can be a death sentence for the deck.

Laplace's Demon allows you to force attacks, giving you a Counter effect, possible memory off of ST-15 Agumon and Greymon Inherits, and with Metalgarurumon Ace can lose your opponent even more memory.

Tai Kamiya & Matt Ishida make for an easier Win-Con, and most decks this format will happily digivolve into Lv 6s. Also playable off ST-15 Greymon.

ST-15 Tai Kamiya is for draws, making your Lv 6 + 7 Blockers even bigger and harder to deal with, and gives you draws

Omnimon Zwart Defeat is for when you don't have Omnimon Zwart in hand for your Lv 6s, and gives important removal for tamers. Alter-B performs a much similar function but paired with Merciful Mode can push for game.

Omnimon Merciful Mode is for board clearing and for removing problem cards in the opponent's trash.  Very useful against Loogamon specifically, but circumvents [On Deletion] effects as it shuffles Digimon away before they can activate.

Other Option:

Gabumon EX4 also searches most of the deck, with prority for Metalgarurumon and WereGarurumon.

Additional Analog Youth's for searching.

Defense Training searches half the deck.

Gabumon ST-16 digivolves from Tsunomon EX4. If you wish to forgo ST-15 Greymon, Gabumon ST-16 can be an ample memory gainer. replacement.