But then you can get the opposite problem: Abuse by Thri-Kreen and other many armed races and/or in tandem with the Girallon's Blessing spell.
Is the Thri-Kreen balanced?Those examples (thri kreen and Girallon's Blessing) are problematic by themselves. I think a wiser choice would be to not use them in a game.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.