Crib Swap
Lorwyn — uncommon
Tribal Instant — Shapeshifter
Crib Swap rulings:
2020-08-07: Tribal is a card type (like creature or instant), not a supertype (like legendary).
2020-08-07: Changeling applies in all zones, not just the battlefield.
2020-08-07: If the target creature is an illegal target by the time Crib Swap tries to resolve, the spell won't resolve. No player will create a Shapeshifter token.