While exploring Canterlot Castle, Pinkie and Rainbow Dash uncover a room filled with stone tablets connected to dials. Above each dial is the name of an alicorn. These couldn't possibly control an alicorn's power, could they?
A pony-to-pony confrontation that may or may not lead to the answers one seeks from the other. How does one deal with an anomoly such as this? Only one way to find out!
TASTE THE RAINBOW.