PYST was the god of drinking in Norse mythology. He would be much better-known if he was not getting schiit-faced all the time. Or, well, not really. PYST stands for Put Your Schiit Together, a set of short cables that make stacking your DAC and amp easy.
These are nice, high-quality cables, with solid, reliable connectors. And they are short. And not too expensive.
Important info: The Schiit XLR Pysts are about 15.2cm long, excluding connectors.