Aries: "bombarda maxima" -creates an explosion
Taurus: "imperio" -controls the opponent
Gemini: "silencio" -mutes the opponent
Cancer: "protego" -barrier that offers protection
Leo: "expelliarmus" -disarmes the opponent
Virgo: "episkey" -heals wounds
Libra: "cantis" -makes the victim sing uncontrollably
Scorpio: "avada kedavra" (of course) -kills the opponent
Sagittarius: "alohomora" -unlocks doors
Capricorn: "reparo" -repairs broken things
Aquarius: "aparecium" -makes invisible ink readable
Pisces: "obliviate" -erases memory