Emeria Angel

Landfall's job was always to make the second land drop matter, and this is the design that proved the keyword could ride on a permanent and keep paying out turn after turn. A 3/3 flier for four is fair on its own; the engine is what you build around it. Every land that enters after it resolves spins off a 1/1 flying token, which turns fetchlands into double triggers, turns a sandbagged hand of lands into a board, and turns flooding (the thing that usually loses games) into incremental pressure in the air. The optional clause does more than it looks: declining a Bird is rarely correct, but the "may" keeps it clean across symmetrical effects and protects you from a forced trigger when a token would be a liability. Its durability comes from rewarding a deck already doing what white aggro wants to do, attack overhead, while quietly paying you for the lands you were drawing anyway. It sits at the head of a small lineage of landfall payoffs that convert mana development into board presence, and it remains the cleanest expression of the idea: no fixed token cap, no sacrifice cost, no upkeep tax, just a flier that keeps printing more fliers as long as you keep hitting your drops.