This story takes place after The Laughing Dragon (1985). which introduces Sorrowful, but was broadcast later.
Monsters on Beast Island that previously appeared on He-Man and the Masters of the Universe (1983) include Bakkull from Teela's Quest (1983); the Cyclops from Dree Elle's Return (1983); the Grazzler from Fisto's Forest (1984); the Talgoth from The Rarest Gift of All (1984) and Grabber from Mistaken Identity (1985).
All the backgrounds for the village of Bluestone were previously seen as the village of Blackmore in The Red Knight (1985) and will be seen again as Valley View Castle in The Time Transformer (1987).
Castaspella's Flutter Plane (not to be confused with the Butterflyer) was designed by Ric Quiroz. It will appear again, being flown by Glimmer, in Huntara (1985).
This is the only time Castaspella uses the disk on her wrist to perform magic, an element which was introduced in the series bible but soon abandoned.