This clever loop relies on a persist creature (like Kitchen Finks or Murderous Redcap) and Woe Strider to feed an endless cycle of sacrifices, with Woe Strider's own sacrifice outlet letting you continuously trigger scry 1 while generating infinite death triggers. The true engine that makes this infinite is Uncivil Unrest, whose riot-granting static ability ensures the persist creature enters the battlefield with a +1/+1 counter. That counter immediately cancels out the -1/-1 counter from the persist trigger, resetting the creature so it can die again and again.