God, Trixie's adorable. She believes she's being powerful, clever, and downright unstoppable, when the adorable reality is that she's just sitting there using a basic spell and could easily be overthrown.
Daring: "Jeez, would you know it off!? You're seriously annoying!" Trixie: "Nyah-ha-haaa! You can't best the Great and Powerful Trixie! Trixie is using a spell she learned in Kindergarten! Trixie cannot be stopped!!"
Ooh! Ooh! I know! Put it in an unlocked chest in a deep, curiously extensive labyrinth filled with relatively weak monsters and entire surmountable traps, and guard it with a single, significantly stronger monster.