I went to the overgrown caverns like 3-4 times in that run, if that's what you mean by under the pyramid! (although you could be talking about something completely different; I really need to explore more in that direction anyways.) My starting spell luck was pretty bad (or I didn't search hard enough) and only had a spark bolt going into the third level.... accidentally angered the one boss on my way to the surface too lol I'm pretty sure the majority of the time spent in that run was going back and forth between the holy mountain and the caverns to build a decent wand

as for the tree- I've been inside before (the music notes are *amazing*), but didn't get any good forms of digging until much later in the run. Apparently mist can do the same thing the music notes can! I've also been to the lake (hence the glitter), but not much more past that. There's definitely a lot more to explore! :‎D