In short: after the first 12 wins; all done. There are no secondary objectives, and no placement or placement rewards. It seems quite possible is likely that the rewards will be updated for to packs of the current newest set each time the December 2022 running of this eventis run, as they were in 2020, when the ultimate reward was changed from an [[ELD|Eldraine]] pack to a [[ZNR]] pack, and in December 2022, from ZNR to [[The Brothers' War]] .