Rancorous Archaic

Converge asks a manabase a single question: how many colors can you produce right now? Everything about this Avatar follows from the answer. Five generic mana buys a frame whose only variable is the counters it enters with, one for each color of mana spent to cast it. Pay entirely in colorless and it lands as a bare 2/2, a rate no one plays for its own sake. Feed it every color you have and it arrives a 7/7 that flies over nothing, tramples through everything, and swats fliers on defense. The generic cost is the disciplined choice here: converge cards that demand specific colors punish greedy mana, but this one asks only that your mana be varied, not that any particular color show up. That turns it into a barometer for the thing five-color decks are built to do, handing back a reward proportional to how well the manabase performs. The reach-and-trample pairing gives those counters somewhere to matter on both halves of the board rather than a vanilla body that only cares about its top-end number: extra size threatens through blockers on offense and reaches higher on defense. The card scales cleanly along a single axis, from unplayable to genuinely threatening, with nothing hidden. It is exactly as good as your mana lets it be.