Fallax Memoria

Spell Name: False Memory Charm

Incantation: Fallax Memoria

Pronunciation: FAL-ax meh-MOR-ee-uh

Spell Branch: Charms

Magical Discipline(s):

Appearance: The caster thinks hard on the false thought, then withdraws it from his mind with his wand, similar to extracting a memory for use with a Pensieve. The false thought is then placed in the mind of the victim.

Description: Causes the victim to believe a false memory created by the caster is actually true. The victim will act accordingly. Permanent, unless poorly cast or cured with Legilimency therapy.

Regulations: Controlled

Skill Level: Master

Etymology: From Latin fallax, “deceitful, false”, and memoria, “memory”

References:

• Used by Voldemort on both Morfin Gaunt and Hokey the house-elf (Voldemort was an extremely powerful wizard, and thus able to use the spell successfully despite his youth).
• Ignan Storm covered the topic in his N.E.W.T. level course [1]
• Fauna Blake discusses it in her Defense N.E.W.T [2]
• Torquil Foley alludes to it during Niobe Thursby's obliviation chrisis [3]

Notes: Use outside Ministry approval is Illegal.