Skeleton Warriors - Season 1 Episode 6 Mindgames
Overview: Talyn and Lightstar are worried when Grimskull suffers from constant nightmares about Baron Dark. The nightmare becomes real when he suddenly falls into a coma. The Legion of Light soon realizes that Baron Dark is, in fact, responsible for Grimskull’s state, in an attempt to control his mind and learn the hidden location of the Legion’s crystal half.