P/T Set Number 12 Language Legal Formats Commander, Historic, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Modern, Pauper, Pioneer, Standard, Timeless
Spare packs are useful for: Prize support Bonus pack-per-win rewards A raffle at the end of the night A few extra packs for late arrivals Casual pack opening after the draft Check Availability Before Planning the Night MTG booster box stock changes quickly, especially around pre-orders, popular Universes Beyond releases, and strong draft sets
One card that stands out an exception to that is Aeon Chronicler, which will get five time counters and feed you a free card each time a counter is removed
Even if you arent casting your opponents cards, youre still denying them access to whatever card you exile, which can sometimes have a huge impact