Gray Merchant of Asphodel

Devotion's payoff and its proof of concept in one card. The mechanic asks you to commit to a color by counting pips on the permanents you already control, and this is the creature that turns that count into a number on the scoreboard. The body is almost incidental: a 2/4 is a fine blocker, but nobody runs this for the stats. What matters is the entry trigger, which converts a board state full of black symbols into a symmetrical swing of life, drained from each opponent and gained right back. In a heavy mono-black build the trigger alone can end games, and because it reads "each opponent," it scales with the size of the table rather than diminishing across it. The design discipline is that it pays you nothing for splashing: a deck running off-color cards waters down its devotion and watches the drain shrink to a rounding error, so the card enforces the very color commitment the mechanic was built to reward. The recursion angle is where it becomes an engine rather than a payoff: any deck that can return it to hand or reanimate it gets to fire the trigger again, and the life gain on the back end keeps you alive long enough to assemble the loop. It is the rare keyword payoff that justifies the entire mechanic by itself, which is why "Gary" became the proper noun for closing out a mono-black game.