Obliviate

Obliviate is a spell used by sorcerers in the EMPATH: The Luckiest Smurf story series that is used to erase either certain memories from another person's mind or all their memories. It is usually used to protect other people from painful memories that are too traumatizing for them to bear or to keep secrets hidden from other people's memories, though it can also be abused for hiding various types of abuse done unto others by evil sorcerers.

It is named for the similar type of spell used in the Harry Potter book and film series.