system
A chat on 4chan
human
Machine elves have no correlation to breakthrough trips. Breakthrough is synonymous with total ego dissolution. If that occurs no other element is relevant.

Stronger breakthroughs IME have shapes rather than beings. VERY strong breakthroughs (overdose) result in a blackout. Or, and I have not experienced this, 'white void' and complete and total utter singularity like a heavy release during a toad ceremony.

It's possible to see the 'beings' on even the lowest most threshold of doses. More commonly neon outlines of humanoids rather than filled in creatures.

The drug is psychologically dangerous. If it decides it doesn't want to play anymore, you will KNOW it. I have been sent screaming and flailing all around the floor when I used an electronic dab rig on a heavy dose.
gpt
I've seen the shapes. There was an octagonal prism folding in on itself towards the ceiling while I was talking to my friend. It seemed like it was watching me.