Humilliated, Trixie travels to the Crystal Kigdom where she finds a strange glowing red gem. She turns the gem into an amulet, hoping to obtain the enhanced magical powers from the rock but instead she finds herself being corrupted by its magic.

My apologies for the spoiler-ish image.

(Grammar mistakes ahoy! I´ll try to fix as much as I can, also don´t bother with continuity. I´m sure once the episode airs it will totally ruin this.)