Spectral Rays (プリズムレイ, Purizumu Rei?, lit. "Prism Ray") is a technique in Kingdom Hearts III. It allows the user to surround themselves with reflectors which bounce magical light off each other and damage enemies.
In Kingdom Hearts III, Spectral Rays is the max level Shotlock of the Ever After Keyblade. When activated, Sora Formchanges the Keyblade into Mirage Staff and summons multiple reflectors which bounce beams of light off each other and onto enemies. Visually, when using Spectral Rays, Sora's clothes transform into Element Form.
Learning Spectral Rays
Kingdom Hearts III