Corruption of Towashi

The whole card is built on a single verb: transform. Incubate 4 hands you a token that wants to flip, and the draw trigger cashes in every flip you can engineer, capped at one card per turn so the payoff stays a steady drip rather than a burst. That cap is the design lever that keeps the enchantment from spiraling: it rewards you for having one transform every turn, not for stacking ten into a single end step. What makes the design more interesting than the lone Incubator it comes with is the second clause, which cares about any permanent you control that transforms or enters transformed. That opens the enchantment up to double-faced lands that flip, transforming creatures flickering back in on their far side, and any other flip-trigger you can chain across a game, turning what looks like a one-shot value engine into a slow card-advantage tap that runs as long as you keep feeding it transforms. The Incubator itself is the built-in floor: even in a shell with no other transform cards, you get a body and one draw off the initial flip. The ceiling is a deck constructed to trigger the second clause on a schedule, where the enchantment quietly refills your hand while the transformed permanents do the rest of the work.