This clever loop relies on the interaction between a persist creature and Combine Guildmage, whose first activated ability ensures your creatures enter the battlefield with an extra +1/+1 counter. Normally, persist returns a creature with a -1/-1 counter that permanently neutralizes future persist triggers, but this positive counter instantly cancels it out as a state-based action. With that infinite recursion engine running smoothly, Viscera Seer steps in to turn those endless deaths into a bottomless well of scry triggers while fueling whatever sacrifice synergy your graveyard strategy desires.