GreenMachine
Bluelighter
i think thats the wrong question to ask--ANY psychedelic can give you HPPD (flashbacks).
if you are asking which psychedelics will give you more of a mindfuck, i would say LSD, DMT, 2C-E, higher doses of mushrooms.
if you are asking which psychedelics will give you more of a mindfuck, i would say LSD, DMT, 2C-E, higher doses of mushrooms.

(I wrote about the hellish exp in the "who are the shadow people" thread in DC). I'm also more sensitive to psychosis from amphetamines. As for psychs that have caused me lasting visual disturbances, 2c-I and LSA are the only two to cause residual visuals for up to months after dosing.