Seraph of the Masses
Convoke and a board-counting body pull in the same direction, which is the quiet elegance of the design: the wider your battlefield, the more creatures you can tap to discount the cast, and the bigger the flier arrives. A go-wide token deck floods the table, taps those bodies to help pay, and the Angel lands with power and toughness equal to the number of creatures you control (itself included, so a crowded board is both the discount and the payoff). That coupling is the appeal and the trap. The board state that makes it nearly free is the same board state that makes it enormous, so its value is welded to a position you have already reached rather than one it helps you claw back to. The vulnerability is structural: because the stats read directly off your creature count, anything that thins the board thins the Seraph in lockstep, and a full sweeper takes it down with everyone else, since it is one more creature on that board. It rewards committing hard and offers nothing when that commitment is punished. As a top-end payoff for a white token strategy, it asks you to be ahead already: a flying finisher that scales with the plan instead of one that rescues it, closing games you were winning rather than reversing ones you were losing.

