Dumbledore's Stunning Spell

This was a spell most likely created by Dumbledore himself, to aid in his escape from the Minister of Magic in the 1995-1996 school year. It is described as a streak of silver light flashing around the room, bearing the sound of a gunshot, and causing the floor to tremble. This spell was able to stun Cornelius Fudge, Dolores Umbridge, John Dawlish, Kingsley Shacklebolt, and Percy Weasley all at once.