The wonderful thing about needing to rely on your own skills is that it gives you an excuse to try something you otherwise wouldn't. In this case, I used Blender to create a very quick-and-dirty scene of some sort of temple, in which our protagonist can pierce the veil of our mortal plane...

The fact that they choose to do this with the use of drugs is, I'm sure, purely out of necessity.

A little distortion, tinting and blurring through a shader complements the effect.

Without being able to use my usual sound libraries, I had to make my own, so for this scene, I recorded a few layers of me droning into a microphone to create the appropriate ambience (think "Snoke" from the Force Awakens soundtrack), and layered myself taking deep breaths in and out to accompany the use of the aforementioned substances - the act of which actually left me feeling lightheaded for a few minutes. So if nothing else, I was in the right mindspace, at least.