In the Eye of Chaos

In the Eye of Chaos is legal in Commander, Legacy, Vintage, and Oathbreaker — nowhere else. Commander is where it does its best work: four players means four people struggling with cumulative upkeep, and stax decks can lock tables out of interaction entirely when opponents can't sustain the tax across multiple turns. In Legacy and Vintage, the threat density is too high and the opponents too few for a symmetrical enchantment that doesn't win the game on its own; it occasionally shows up in prison sideboards but rarely as a maindeck piece. Oathbreaker mirrors the Commander experience at a smaller scale and faster clock, where In the Eye of Chaos can shut down a reactive opponent long enough for a planeswalker ultimate to close things out.