Sulley & Boo - Scare Buddies

Combo Shift 4 Ink (You may pay 4 Ink to play this on top of one of your characters named Sulley, one named Boo, or one of each.)
[The Power of Friendship] When this character is banished, if any of the cards that were under them are character cards, you may play those characters from your discard for free.