Sanctuary Raptor

Colorless flying that scales with a token board: that combination is the design work here. A generic cost slots the Bird into any deck, but the payoff clause reads its owner's board and, on attack, turns a fragile 2/1 flier into a 4/1 first striker for the swing. The threshold matters more than the numbers. Three tokens is a low bar for a go-wide shell already producing Servos, Thopters, or spirits, so the payoff assumes the aggression is already underway, then rewards it with an evasive threat that punches through the ground stall the tokens themselves cannot break. The intervening 'if' is what keeps a colorless flier this pushable honest: the count is checked twice, once when you declare the attack and again when the ability resolves. Sacrifice a token in response to the trigger, or answer one at instant speed, and the bonus fizzles entirely; the raptor swings as a naked 2/1. That double check punishes overcommitting the board a beat too eagerly and gives the opponent a live window to deny the pump. It is not a token generator itself and does no work stabilizing a stalled board; it is a finisher bolted onto a Bird body rather than an engine you build around. The first strike is the sharper half of the bonus, letting it trade up against larger fliers that would otherwise eat a bare 2/1.