...... well if you use anything with some alkaloids to basify youre solution you are just going to get those alkaloids in your solvent. and the harmful chemicals are only harmful if you let them cause harm by not using them properly. and also, no matter what you use to basify, a ph of 14 can cause serious harm either way. and naptha is harmless unless your huffing, lighting it on fire, or drinking it. and the way the "elves" made it was to make a tea with the plants themselve's i'm sure they weren't extracting pure dmt, that is, unless they were using a base, an acid, and a solvent. if you want to drink aya, then get some mhrb or similar, and some caapi or similar and make a brew, filter, reduce, and drink. then that opens up the door you need to figure out maoi's which can kill you in a whole different way if you don't take a special diet, and other considerations. there is going to be a risk with anything you try. the size of this risk depends on your abilities.
you are going to need:
-patience
-research (lots)
-determination
-concentration
-common sense