Cater uses clothes-changing magic on both himself and other characters in Book 1 and again on himself in Book 7 of the game.
Other magic we have seen Cater use is levitation during Halloween (to expel troublesome campus visitors without their knowing) and fire magic during the Playfulland event.
We see Cater struggle with “autocleaning via implement magic infusion” spells, which seems to including things like getting brooms dustcloths to clean automatically.
This seems to be high level magic, with Riddle saying that he has not learned it in class, as a 2nd-year student, but he has read the spell formula in a book.
Cater uses unspecified attack magic against Ace in Book 7.
Twisted Wonderland Reference Note 