Just though about sharing my experience with ayahuasca (DMT) and seeing what other people have to say about it.
I passed the 2010 reveilon in a smallholding with a comunity (Comunindios) doing some Ayahuasca ceremony. Comunindios's philosophy somehow echoes Thelema, the main aspects being Light, Truth and Pro-Creation.
The ritual was hold in a clearing into the woods, on a cold and rainy full moon night. A big satin was used to cover the area against the rain. Outside the satin a fire was set. In the center of the clearing there was the remains of a recently cut tree. I was without ingesting alcohol or drugs and on vegetarian diet for a week.
Once the sun sets the group gather in the clearing and do some meditation for ~5 minutes. Them proceeding in silence everyone go to take the ayahuasca. It's said the tea has a bad taste, but I actually enjoyed it, as it tasted like cofee. After drinking a small cup (~100 ml) of concentrated ayahuasca i went to a chair and sat there covered by some blankets and waited in meditation (pranayama).
I did not felt any "collateral effects" associated with the ayahuasca, no nausea, throwing up or anything like that. After ~30 minutes, with my eyes closed, I began to see geometric forms and patterns floating before me. There was some rhythm but also chaos in the way they moved. They were from various colors and forms, I felt they had sandpaper-like texture. Time lost it's meaning, i did not knew if I was in the present, past or future, or how fast or slow the time was passing. My senses were nullified, but once i went after them they responded normally. When i opened my eyes the world was absolutely normal.
After some "time" the forms start to vanish gradually. As they vanished I was "seeing" a celestial vault, a feeling of subtle happiness took root in me. Opening my eyes and looking around i could feel other people feelings. I felt happiness coming from the old shaman, angst in an old lady (who later revealed she had spent the night living again family conflicts), a couple cuddling a few feet from me emanated love, looking to the fire several yards away made me feel the heat and i felt the woods were observing us. When I looked to the cut tree into the clearing I saw it as the decapitated head of a bull in state of decomposition, although the form of the tree remained the same, only my understanding of it was changed. The death represented in no way diminished the sensation of happiness nor did it cause repulse or fear, it sat there as a simple event along the way.
Closing my eyes again and looking inside I kept seeing the celestial vault. A dialogue started to happen between the vault (Nuit?) and a source of heat (Hadit?) coming from me, that I felt wasn't me. The conversation went on as an explanation of Thelema's cosmology, "Nuit" being the main speaker and "Hadit" taking the position of interviewer. The interview started with a presentation of the 0=2 formula, which was show and explained in it's diverse manifestations, including in quantum mechanics (that used to torment me deeply during chemistry college). The class kept on going deeply into AL II 9, "Remember ye that existence is pure joy; that all the sorrows are but as shadows; they pass & are done", again being shown and explained in it's diverse manifestations. That followed with AL I 29, "For I am divided for love's sake, for the chance of union". During all the talk I remember to get worried if this experience would never end because I felt as if I've been in this for days.
After AL II 9 "lesson" "Nuit" said farewell and "Hadit" went back into me, as sudden as all started it all stopped. I had passed 5 hours since drinking the ayahuasca, and we were now 2 hours into 2010. I did not notice the fireworks at midnight at all, and after asking if there were any i was told a lot of them had been fired by neighbors. I sat by the fire and waited exhausted both physically, but feeling my mind absolutely relaxed. At 4am people gathered back, almost everyone were back from the ayahuasca trip, and talked about how it had been to them. After that I slept there in the clearing.
For 1 month and a half after the ritual my sense of time was apeshit crazy, days passing by without noticing. That state when time is irrelevant and meaningless is what I think is Eternal.
All in all the experience was very interesting and I plan to go for another ride soon in the next equinox (almost there). People's experiences vary wildly, be it for light or dark side experiences. Let's see what awaits me next time.