Mind Blast is illithid power and mind flayer ability which creates a cone of psychic energy that damages and stuns enemies.
Description
Spew forth a conical wave of psychic energy and possibly 
targets within.
Properties
- Cost:
-
Action - Damage:
-
4d8 (4~32) + Spellcasting modifier 
Psychic damage - Details:
-
AoE: 14 m / ft (Cone) -
Recharge: Long rest -
INT Save (Spell save DC)
Condition: Stunned
Duration: 1 turn
- Cannot move or take Actions,
Bonus actions, or 
Reactions. - Affected creature automatically fails Strength and Dexterity saving throws.
- Removed by Freedom of Movement.
How to learn
Used by creatures: Mind flayer, and Partial-illithid
Other ways to learn:
- After becoming a partial-illithid, unlock from the illithid power skill tree with a Mind Flayer Parasite Specimen.