Shriek Raptor

Infect on a flying body is the cleanest expression of the keyword's central tension: every point of evasive damage is a point of permanent progress toward the ten poison that ends a game. The math is what makes it dangerous. Five attacks for two poison apiece is the clock, and because flying answers most ground-based blocking, the defender's job becomes finding a removal spell or a flier of their own before the counters accumulate past saving. There is no chump-and-stabilize against poison the way there is against twenty life; each connection is locked in.

What keeps the card from being oppressive is the rate. Five mana for a 2/3 that deals only two poison per swing is a slow burn, not a finisher, and the body folds to nearly any combat or removal answer the moment it is on the table. Infect's design discipline lives here: the keyword is so punishing on the back end that the front end has to be priced conservatively, and a two-power flier at five mana is exactly that compromise. It rewards a deck already committed to the poison plan, where this is one more evasive source stacking counters alongside cheaper, faster threats, rather than a card that does the work alone.