Deck built around Fallen Oni
Survive the early game, kill whatever threat appear, and trigger Fallen Oni's summon ability again and again. Can also default to Vara abuse depending on the situation.
I don't have the shadow market dude, but it feels like it would make the deck more reliable. Some other thoughts, but I'd really love to hear yours!
It's sort of a meme deck I guess, but help would still be appreciated. Remember though, the goal is to have your opponent tap out from Fallen Onis as his odds to draw an unit crumble. I'm considering Time instead of Primal for bounces.