Reviving Spell

"He raised his own wand, pointed it at Winky, and said, “Rennervate!” Winky stirred feebly."

- Amos Diggory uses the spell on Winky.

The Reviving Spell (Rennervate ) is a charm that awakens whomever the caster's wand is pointed at. It is accompanied by a flash of brilliant red light.

This can be used to counteract a single Stunning Spell, although it is ineffective against multiple Stunners hitting an individual. It also is ineffective against Dark Magic such as the Drink of Despair.

Practitioners

 * Albus Dumbledore
 * Amos Diggory
 * Harry Potter

Etymology
The original incantation was Ennervate, which means "to weaken". Due to this misconception, J.K. Rowling officially renamed it to "Rennervate", which means "to energise".

Appearances

 * Harry Potter and the Goblet of Fire
 * Harry Potter and the Half-Blood Prince
 * Harry Potter and the Half-Blood Prince (film)

Notes and references
Enervatum Herpaannu