Fractal Rabbit
Explorer
I am not sure if this counts as a subclass, but a musical instrument pact implement would be good for the warlock. From "The Devil Went Down to Georgia" and urban legends of people selling their souls to be great blues musicians to the weird music in Lovecraft's work to (fey) satyrs and their pipes to heavenly harps and trumpets, pretty much every patron type is associated with some kind of music. Mechanically it could give something like mass suggestion that only works as long as you keep playing.
That’s so awesome, such a phenomenal potential merging of crunch and fluff, I’m having a hard time putting it into words.
F***ing Awesome. I told my regular group about it and we’re constructing it now!!!!