Foul Watcher

Both halves of this bird pull toward the same graveyard-counting goal, so it reads as a support piece rather than a self-contained engine. The enters-the-battlefield surveil is a small down payment toward the four-card-type threshold: put a card into the graveyard, and you have nudged one type closer to switching the delirium bonus on. Clear the count and the 1/2 flyer becomes a 2/2 flyer, which is the difference between a chip attacker and a body that trades with the two-drops it flies past. The honest tension is that a single surveil almost never gets you to delirium alone; this creature is one voice in a graveyard chorus, not the whole choir. It fills a specific and often thankless slot: the cheap evasive body that also greases the yard, so the fetchlands, cantrips, and self-mill around it can turn on the real payoffs. Every surveil generated elsewhere edges the graveyard toward the count that grows this creature, and the creature's own trigger pays a little back into that same pool. It is built for a deck that already cares about card-type variety in the graveyard, sized to attack in the air the moment that deck comes online, and content to be a modest flyer in the games where the yard stays thin.