Mox is analysing…
Insightcard_draw$1.85A blue sorcery that can draw multiple cards based on a creature type or board state, serving the same conditional mass-draw role.Coastal Piracycard_draw$0.97Not a one-shot spell, but it rewards a creature-heavy board with repeated card draw, similar to Airborne Aid’s synergy with a specific creature type.Bident of Thassacard_draw$0.40Another blue payoff for a creature board that turns combat presence into card advantage, functionally similar as a tribal/board-based draw engine.Kindred Discoverycard_draw$17.67A strong tribal draw engine that can generate large amounts of card advantage from a chosen creature type, closely matching Airborne Aid’s tribal scaling.Vanquish the WeakutilityBudget$0.04This is not draw, but if you're looking for a cheap blue spell-slot analogue, this suggestion is not appropriate.
