Each day, the daily GM hunt leader and cohort prepare TWO instances of Jack and Eochai fighting each other in Croatoa, so that when it's time for the daily GM hunt league to roll through Croatoa, the TWO instances of the GMs fighting can be cleared. One instance spawns naturally at the Vale by defeating the preceding spawns until they're out, the other can occur by pulling the throne sitting Jack or wandering Jack and the tree/hiding Eochai up to the Vale to fight eachother.