Reaper King is a five-color 6/6 that buffs your scarecrows and blows up permanents when they enter
Lackluster and not the most exciting, this is far from the most powerful red card in Commander
Mutant Menace (Fallout): A unique deck that uses "Rad" counters to mill opponents while growing your own creatures with +1/+1 counters
That's especially true in the Living Energy Commander Deck, where living creatures produce a special kind of energy that can be harnessed to empower incredible acts of artifice
And it did this without printing a single card that just straight up broke the format, like a Vivi Ornitier or Cori-Steel Cutter
Cards like Sol Ring, Arcane Signet, Llanowar Elves, and even lands are permanent with mana abilities, as they do nothing but make you mana