8 cards where the name includes “polymorph”

Jalira, Master Polymorphist (Masters 25 #63)
Mass Polymorph (Magic 2011 #64)
Mordenkainen's Polymorph (Adventures in the Forgotten Realms #65)
Obscura Polymorphist (Alchemy: New Capenna #24)
Polymorph (Magic 2010 #67)
Polymorphist's Jest (Commander 2017 #90)
Polymorphous Rush (Journey into Nyx #46)
True Polymorph (Adventures in the Forgotten Realms #80)

This search is finished. Now the real work can begin.