Eradication Spell

Deletrius is a spell which removes the "shadow" of the last spell performed by a wand. This shadow is formed by the spell Prior Incantato. It is similar to Finite, although the extent of this spell's power is not completely understood. Amos Diggory used this after testing Harry Potter's wand with Prior Incantato in 1994.

Etymology
Latin verb delere meaning to destroy, from the English word delete comes, meaning to remove.

Appearances

 * Harry Potter and the Goblet of Fire

Destructum