Prism Rain

Prisim Rain is a shotlock that is exclusive to Aqua in Kingdom Hearts: Birth by Sleep. This shotlock is similar to Ragnarok, but instead of beams of light, it shoots out Rainbow colored Beams.

Etymology
A Prism is a Small glass that is used in Science to reflect light at an angle until it's to the point where the light splits up into 7 different colors.

Location
Prism Rain is located in a chest in Deep Space