Need help identifying legal High

[Yata]

SWIM was given a pill at a party after clubbing, which was large and red, SWIM had been doing ket earlier in the night and some MDMA powder but not that much. After taking this pill and another half of one it sent SWIM on the wierdest experience in his life. It was like a MDMA trip but ten times worse, it was kind of trippy but eventually the pills just would NOT let go, at all, SWIM was kept up for hours and the pills didnt wear off till about 3-4pm the next day. SWIM said it was relentless, and eventually it kept coming in waves of being totally fucked then feeling like shit, every few minutes. SWIM heard the word diablo and plant feed being thrown around by people but SWIM has no idea what it was. Whoever invented the pill must be evil or an insane madman but any help locating what it was would be helpfull