Goham Djinn
A 5/5 that wants you to play less black than its own color identity suggests. The static clause shrinks it to a 3/3 whenever black ties or leads the color count among all permanents, which means a dedicated Swamp pile turns this fatty against itself: the deck most inclined to run a regenerating black beater is exactly the one that keeps it stuck at 3/3. The full body is reserved for decks that splash black rather than commit to it, and the recurring regeneration sustains the creature precisely in the multicolor brews where the penalty switches off. That tradeoff captures the design conversation of this gold-heavy era, which rewarded color spread and multicolor greed while taxing the mono-pigment piles that ruled earlier formats. Goham Djinn argues that thesis from the creature side: a black card built to be worse the more black you run, asking to be the off-color body in a four- or five-color shell rather than the anchor of a single-color curve. The penalty cuts both ways, since opposing permanents feed the tally too, so the same board that weakens the Djinn can swing it back to full size as the color spread shifts mid-game.
