Keldon Mantle

The conceit here is a value engine that lives on one permanent and asks three different colors to feed it: black to regenerate, red to pump, green for trample. Two of those activations reach outside red, the wheel-borrowing instinct of a period still working out how to let one color rent another's tricks; the red activation is the on-color one, the cheap power boost any red deck running the Aura can fire without a splash. Because the text reads simply "enchant creature," the toolbox attaches to any body you like, not just a red one, which is the most useful thing about it. The problem the design never solves is the price you pay before anything happens. Two mana goes in before a single ability fires, then more mana every turn for effects that standalone cards deliver more cheaply: a regeneration shield, one point of power for a turn, one turn of trample. The whole investment also rides on a single creature, so every point of mana committed is hostage to one removal spell that takes the Aura with it. What it offers in exchange is completeness from one source: answer a blocker, survive a sweeper, push damage through, all from the enchanted body if the mana is open and the patience is there. It reads as an artifact of multicolor activation finding its footing on permanents rather than spells: a curiosity, not a foundation.