In PMU there seems to be only one psychic type AoE and that is synchronoise which covers a large range. So would it be possible to convert Psywave into another AoE.
Psywave could cover a range of about 2-5 tile range. The animation could be like calm mind but the circles could get bigger as they travel so just as the move finishes you should see a big ring. If not Psywave then maybe some other psychic move.