Squadron Hawk

Squadron Hawk has a real Legacy pedigree — it anchored white Stoneblade shells as a hand-refill engine that also blocked in the air. In Pauper it sees play for the same reason: commons rarely generate that much card advantage from a single ETB. Commander is where Squadron Hawk becomes niche; four copies of the same card conflict with the singleton rule, so only the first Hawk tutors anything meaningful, and a 1/1 flyer with a one-time dig effect rarely justifies a slot at that power level. Oathbreaker is a closer fit than Commander when the signature spell supports white weenie, but that's a narrow window.