1. It causes the caster's voice to be magnified.   Wingardium Leviosa   Obliviate   Sonorus   Petrificus Totalus   Hint Half-n-half Clue   2. It causes a magically-magnified voice to return to its original pitch.   Quietus   Rictusempra   Rennervate   Tergeo   Half-n-half Clue   3. It causes a magically-enlarged article to return to its original size.   Sonorus   Oppugno   Reducio   Reducto   Half-n-half Clue   4. It causes the liquid on a particular surface to be cleaned.   Stupefy   Tergeo   Rictusempra   Reducto   Half-n-half Clue   5. It causes the victim's legs to start dancing.   Tarantallegra   Reparo   Mobiliarbus   Rictusempra   Half-n-half Clue   6. It causes all articles in the caster's way to be destroyed.   Reducto   Scourgify   Silencio   Reducio   Half-n-half Clue   7. It causes trees to move.   Petrificus Totalus   Quietus   Reducio   Mobiliarbus   Half-n-half Clue