Mystic Class (Psionics 5e)

Is there anyone out there potentially running a game allowing the Mystic class? I really would love to give it an honest play test.

I really want to get my Psi on. (see what I did there?)

In some Dark Sun perhaps?

I think we've had one or two abortive Dark Sun attempts recently. Interest check: are people still up for it? Although Valkeelis' question relates to Mystic 5e rather than Dark Sun