MDMA crystals are a form of the drug that is more pure and potent. MDMA powder is less potent and is more likely to be cut with other substances. MDMA is a psychoactive drug that alters mood and perception. It is sometimes used as a party drug, as it can produce feelings of euphoria, increased energy, and empathy. Some people believe that MDMA is safe, while others think that it is dangerous. There is no clear consensus on whether drugs should be legalized.