This clever loop turns Woe Strider and an unspecified undying creature into an endless engine of sacrifice and rebirth by weaponizing Donate and Blightbeetle against your opponent. While Woe Strider provides both the sacrifice outlet and the repeatable scry utility to keep the loop rolling, the real secret lies in handing Blightbeetle across the table: its static ability prevents opponents' creatures from ever receiving +1/+1 counters, permanently short-circuiting the safety valve that normally stops undying from triggering more than once. Because the returning creature never gets its counter, sacrificing it to Woe Strider over and over generates infinite entry, exit, and death triggers without end.