Angelic Observer
Affinity's design bargain has always run through artifacts: pay less by flooding the board with permanents that are, by themselves, doing little. Retooling that cost reduction to key off a creature type instead of artifacts is the wrinkle here, and it changes what the discount asks of you. Building a wide bench of Citizen tokens is a different kind of commitment than jamming zero-cost artifacts; the bodies you assemble to shave this Angel down are bodies that also block, attack, and feed other go-wide payoffs. The reward at the end of that ramp is modest on its face (a 3/3 flier), but the arithmetic is the point: a Citizen deck already wants a full board, and this converts that board state into a flat rate cut rather than a static anthem or a payoff that dies to a wrath. What keeps the card honest is that the affinity only fires on the way down: once the Angel resolves, it is a vanilla evasive body, so overinvesting in Citizens purely to cheapen it is a losing trade unless those tokens were earning their keep anyway. That constraint pins the card firmly to a tribe that wants to flood the board for its own reasons, which is exactly where a discounted flier reads as a bonus rather than a plan.
