Madam Mim Rival of Merlin (Rise of the Floodborn)

Shift 3 (You may pay 3 Ink to play this on top of one of your characters named Madam Mim.) [Gruesome and Grim] [Exert] — Play a character with cost 4 or less for free. They gain Rush. At the end of the turn, banish them. (They can challenge the turn they're played.)