O

Obliteration Charm
Erases marks or tracks.

Obliviate
o-BLIH-vee-at
Memory Charm
Modifies or erases a portion of the subject's memory.

Oppugno
o-PUHG-no
Commands subject/s to attack a specified target.

Orchideous
or-KIHD-ee-us
Conjures flowers from the end of the caster's wand.