Bringer of the Red Dawn

Commander is where Bringer of the Red Dawn does its best work — the format's slower pace gives you time to reach nine mana or assemble a five-color mana base, and stealing a creature every combat is a game-defining threat that compounds over multiple rounds. In Legacy and Vintage it's a curiosity at best; nine mana is unreachable without dedicated cheat effects, and there are faster, more consistent ways to dominate a board in those formats. Modern is nominally legal but practically irrelevant — the same mana ceiling applies, and no Modern combo deck wants a 5/5 that costs this much. Oathbreaker shares Commander's multiplayer context but has stricter deck-building constraints around your signature spell, which makes hitting five colors for the alternate cost harder to support.