((M!A Hogwarts Style. All time lengths are anon-specified. Feel free to add more!))
Alohamora!: Muse is locked away in a place specified by Anon until rescued or until specified time.
Expelliarmus!: Muse cannot pick up or use any weapon.
Flipendo!: Muse cannot walk more than five steps without falling on their face.
Serpensortia: Muse is constantly attacked by snakes.
Avada Kedavra!: Muse is a ghost.
*throws love potion*: Muse is in love with a character of Anon's choosing.
Avis: Muse is constantly attacked by birds.
Crucio!: Muse is in constant pain.
Confundus!: Muse is confused easily and acts as though drunk.
Expecto Patronum!: Muse is followed/protected by "spirit animal". (Mun or Anon may specify.)
Imperio!: Muse is controlled by (Anon specifies)
Immobulus!: Muse is completely paralyzed until rescued or until specified time.
Incendio!: Muse has uncontrollable hot flashes.
Obliviate!: Muse loses memories/amnesia.
Riddikulus!: Whatever usually scares Muse he/she now finds funny.
Quietus!: Muse is mute.
Rictusempra!: Muse is extremely ticklish.
*throws polyjuice potion*: Muse is stuck in another Muse's body. (Anon specifies.)
Wingardium Leviosa!: Muse grows wings. (Or if Muse has wings, they disappear.)
Sonorus!: Muse must YELL EVERYTHING THEY SAY!
Nox!: Muse is blind.
Impedimenta!: Muse must do everything verrrrrryyyyy slowlyyyyyy....
Legilimens!: Muse must say everything on his/her mind.
Impervius!: Muse is constantly thirsty but cannot drink anything.
*uses portkey*: Muse is transported to a location of Anon's choosing.
Oppugno!: Muse is forced to attack another Muse of Anon's choosing.