Maxperson
Morkus from Orkus
Yeah, I think so. The game is balanced around player abilities, not monster abilities. So the monster's need to have powers that can't be countered by any PC class, but monsters with counterspell need to be able to counter any PC spell.Does it, though? I mean, the new MM has introduced a bunch of new enemies with uncounterable "spells", so it wouldn't be a new and novel thing. It would shine against certain classes of magic-resistant enemies, sure, but plenty of PC classes have stronger matchups against certain families of enemies.
As long as the psion isn't overly tanky, or has a full suite of wizard-like versatility, I don't see the problem with it having an advantage against certain classes of encounters.

