yugioh tier 0 decks History of - Part 1 Yu-Gi-Oh!: 10 Non-Meta Decks That
Description
Cynical Loner If you can attack once with Cynical Loner and it survives, you can Entomb for free

Sacrifice after IV.) I Destroy up to one target nonland permanent

Volatility can encompass temporary mana, as well as unreliable mana
That said, there are a few decks that get closer to a cEDH deck, in terms of win conditions, staples and commanders

Decklist: 1 O-Kagachi, Vengeful Kami
