When the Tantabus, an entity born of sorrow, threatens to break free into the real world, only one hero is fit for the job of stopping it: Wizard.

Alternate ending to “Do Princesses Dream of Magic Sheep?”
(This is what I call a “Henshin One-Shot”, a one-off battle between a Kamen Rider and an Equestrian villain with no real story surrounding it. Kamen Rider Wizard crossover)