Get tricksy with the Mesmerist Rogue!
PDF: https://www.somanyrobots.com/s/Rogue-Mesmerist.pdf
GMBinder: https://www.gmbinder.com/share/-Onrltq12qIZT386vnWh
This was a "commission" of sorts - I offered a free commission to Andrew, the lovely fellow who's been implementing the So Many Subclasses foundry module out of the goodness of his heart, as a thank-you for all his awesome work. He suggested a psionic rogue, with the nice spin of doing a subclass based around either the Precognition or (my own) Mesmerism discipline.
For the unacquainted, I base all my psionics on the ideas in KibblesTasty's Psion class, because it's awesome. And I developed the Mesmerism discipline when I wrote the Illusive Mind subclass for it (itself a patron commission!). So the Mesmerist rogue takes that discipline and translates it over to a 1/3-psion rogue.
Roguish Mind is a bit of a pun on the Psion's "[Something] Mind" subclass naming scheme. In this case, it's our flavor feature, just one proficiency and a 15' mindsight. (Which is slightly redundant, since rogues get 10' blindsight at level 14; but oh well). Obscuring Illusions gives us our primary power, which is access to the Mesmerism Discipline and its psionic power, Illusory Image. Psionic powers behave like cantrips, but with a series of modular enhancements you fuel with psi points; a power cast at X points is roughly equivalent to a spell cast at Xth level. You get a number of psi points equal to your proficiency bonus (short-rest recharge) to cast this power; it normally takes an action, but you can cast it as a bonus action if you're spending points on it. This grants advantage on the subsequent attack and attaches a damage boost to it, and you can spend points to add a slow, blindness, or even more attacks. At level 9 you get Mirror Strike, letting you apply a half-Sneak Attack onto your Illusory Image. (Which, if you used your bonus action for the power, lets you do 1.5x Sneak Attack on your turn). At 13 there's Defensive Duplicate, also triggered off your power, which grants you a one-round mirror image. And 17th gives you Mass Illusion, adding an AoE modifier onto your power and 4 free long-rest-only psi points to cast it with (basically, it's 1/LR, but you can do it more if you blow most of your psi points to do so).
As with other rogues I've done recently, I added a small 5E++ Appendix, just adding a few illusion spells on as a 5th-level feature.
As always, you're invited to come discuss and offer feedback in the comments or on Discord!