I’ve always found physical work is a great way to relax the mind while pondering a problem. Think I found the last piece for psionics while working on the backyard. Tuesday is going to be fun. — Mike Mearls (@mikemearls) May 27, 2018

So, working on the concept of a shared pool of resources that psionic characters choose from. Making this work proved so obviously, stupidly easy that I am going to give you a preview of my next Happy Fun Hour. (1/2)It’s a spell list that you gain access to only if you choose a psionic class. Non-casters pick up and use the cantrips. This class-less spell list can also be used by the mystic. It’s going to be fun diving in on Tuesday. (2/2) — Mike Mearls (@mikemearls) May 27, 2018

I’m having a hard time parsing this tweet but I’m incredibly excited to see new/better psionic rules. Maybe this is clearer – imagine there’s a new school of magic called psionics. As a default, none of those spells appear on any class’s list. You have to choose a psionic subclass, and it tells you that you can now choose spells from that list. — Mike Mearls (@mikemearls) May 27, 2018

Yup — Mike Mearls (@mikemearls) May 27, 2018