Shadewing Laureate

The trigger reveals the design intent: this is a payoff for a flying aristocrats deck, an archetype that rarely gets to exist because flyers and sacrifice fodder usually want opposite things. Small evasive creatures are typically kept alive to chip damage, not thrown away; here their deaths become the resource. Each flyer that dies feeds a counter onto any creature you control, which means the deck can build a single evasive threat into a clock or spread growth wide, and it does not care how the flyers die (combat, chump blocks, sacrifice outlets, edict removal that hits the small ones first). The Warlock typing and the white-black hybrid pip nail the flavor of a coven trading feathers for power, but the mechanical wrinkle worth noting is that the trigger keys off dying, not off entering or attacking, so it turns your own losses into gains and punishes an opponent's board wipe by fueling whatever survives. It rewards a battlefield built out of cheap flyers rather than one big one, and asks you to treat evasion as an expendable engine input instead of a finishing tool.