Stitch the word Buffoon onto all his cloths
Show a frog to Uther and say "look what Merlin did to your son"
Switch his magic book with a book entitled sorcery for dummies
Tell him Arthur is replacing him
Make him wear a dress
Tell him Gwen loves Arthur.
Tell him Murdered is planning to attack you with a pink bunny
Give Morgan a puppy name it Arthur
Tell Him Morgan is a better sorcerer
Bust him next time tries to perform surgery