A Mind Is a Terrible Thing is the thirty-first episode of the second season of Mighty Magiswords, and the eighthty-third episode overall. It is available to watch on the Cartoon Network website as of August 23, 2018. It aired in the United States on May 13, 2019.
The Warriors easily thwart Phil's latest plan with Legendary Knowledge Magisword so Phil repeatedly tries to steal it from them.
- Legendary Knowledge Magisword
- Wad Of Gum Magisword
- Cat Tongue Magisword
- Balloon Animal Magisword
- Bear Claw Magisword (debut)
- Vladcuum The Inhaler Magisword
- Giant Bowl Of Soup Magisword
- The dialogue from the scene where Phil and the Warriors used the Knowledge Magisowrd on themselves was influenced from the scratch track originally recorded for the episode, as such the majority of the material was ad-libbed.