Wish there was. I have yet to see a balanced Mystic class come out in any edition of D&D which is unfortunate because I love the concept.
2e psion was mystic. The fatal flaw was the psionic combat between two psions. At the time, my DM just killed personal psionic battles
Rule 0: The most IMPORTANT rule of D&D. There is no more important rule than this rule. This is a game, and as such, you do everything you can to ensure everyone has fun. /TheEnd