When the Spotlight Cache rolls over each week, it chooses 4 rewards to make up the reward pool. 1 is always "Random S4/S5", and the other 3 always correspond to the 3 featured cards that week. If the player owns the Featured Base card that should be on display in the Spotlight Cache, the scheduled variant should appear in its place. The same goes for if the player owns the Variant that should be displayed, a Premium Mystery Variant should appear in its place.