It depends on what the x is cut with most are a MDMA base then they cut it with, Cocaine, meth anphetamine, heroine, LSD, special K some even cut it with things like drano, icing sugar, plaster of paris and the likes as well as adding colourings they then press it into pill form and mark it...Hence why you have different colours and markings on different batches..so it depends on what you take and the effect you want...

"Your born, You Live, You Die, given this premise, one can conclude since we have no control over when we are born and when we die, the only thing that matters to us should be how we live, simple really?" Mis-Cat to her philosophy Lecturer.