Omni BT22

After trial and error.
this is the best so far,
2 testing spots still in the Omni Ace, could be exchanged with Alter-B/Omni-X/Wisteria Mem

This deck losses against a Ruin mode but it can make an Omni hitting 2 sec on turn 2 with lethal next turn if unchecked:
T1 rookie and Nokia Setter
T2 Hatch, Nokia plays the other rookie, evolve one into the respective BT22 Mega, same with the other rookie, trigger end of turn dna.
Eff Omni, bounce 2 then attack, when attacking check 1 and destroy 1 and unsuspend.
if

After trial and error.
this is the best so far,
2 testing spots still in the Omni Ace, could be exchanged with Alter-B/Omni-X/Wisteria Mem

This deck losses against a Ruin mode but it can make an Omni hitting 2 sec on turn 2 with lethal next turn if unchecked:
T1 rookie and Nokia Setter
T2 Hatch, Nokia plays the other rookie, evolve one into the respective BT22 Mega, same with the other rookie, trigger end of turn dna.
Eff Omni, bounce 2 then attack, when attacking check 1 and destroy 1 and unsuspend.
if started with only Nokia (3) opponents start at 3 with 3 sec and an Omnimon standing there menacingly! (put the nokia at front for more aura)
If unchecked, Omni attacks, checks by eff and untap, hit for 16k. finish with Omni X (alter-b and old omni-x works too).

the ST rookies are for late game, you can get them with miraculous from trash or Nokia into play, it is a cheaper evolution and it implies that you have old Nokia + Matt&Tai/Nokia Setter, Bringing Omni for 3.
Save Miraculous for late to recover Omni, and don't be afraid to search with rookies on play, is the idea.

Alter-S is kinda Nombo here, he evoves with nothing givig the ability to attack at the end,
but having those perks in the deck are nonesense when Omni-Cs has it incluided. could be used as a finisher, but at that point just play 4 Omni X or add some MGallant.