Psionic Dominance is a passive feature and Illithid Power. This feature allows a character to use a reaction to nullify a spell of lower or equal level to their Proficiency Bonus when targeted by an enemy within 18m.
Description
When an enemy within 
18 m / 60 ft targets you with a spell of a Level that is lower than or equal to your Proficiency Bonus, you can use your reaction to nullify the spell.
Details
- Cost:
-
Reaction
Grants:
How to learn
Used by creatures: Partial-Illithid
Other ways to learn:
- After becoming a Partial-Illithid, unlock from the illithid power skill tree with a Mind Flayer Parasite Specimen after obtaining one of the following:
Bugs
As of v4.1.1.4425968, this ability appears to be bugged. It works on Chain Lightning, a Level 6 spell, despite Proficiency Bonus being capped at 4.