Collected and enchanted by the Hashmonks who navigate the Mempool's perilous rivers. Each pill has a splash of the mempool - an essential ingredient in many cryptochemical concoctions. This mempill contains memwraiths - old transactions that waited so long to be confirmed that they've become corrupted. Now they endlessly roam the mempool's rivers. When stored in a pill, memwraiths are believed to protect against mempool pirates.