Sonic Rainboom

The Sonic Rainboom
When a pegasus, the only species capable of this feat, reaches Mach 1, they break the sound barrier. This results in a massive explosion of sound and an incredible display of color.

Each Sonic Rainboom can have a different set of colors, depending on the pegasus that performs it.

Several pegasi throughout recorded history have performed the Sonic Rainboom. In ascending order of date, oldest first, followed by how many times they have done it:
 * Thor (72 times)
 * Terminal Velocity (Twice)
 * Static Discharge (Once)
 * Blue Starfire (Eight times)
 * Cloud Jumper (Four times)
 * Vapid Flight (Once)
 * Calibre (Four times)
 * Rainbow Dash (23 times and counting)
 * Indra (One time and counting)