Mental Prison

level 6 - illusion
Casting Time: 1 action
Range: 60 feet
Components: S
Duration: Concentration, up to 1 minute

Description not available (not OGL).
But here is a summary:

The target must succeed on an Int. save or take 5d10 psychic damage and believe to be surrounded by fire or other hazard.
Sorcerer
Warlock
Wizard
Xanathar´s Guide to Everything
  1. DnD 5e Spells › Mental Prison