Thanks for the calculations and advice. God, I'm so far behind! The voucher price has run up a bunch since, so I could simply secure a few packs around $8.20 on Hive-Engine, or just wait until the free-for-all when voucher-required purchases are lifted. Is it true that buying the Chaos packs on Hive-Engine removes the benefit of being eligible for airdrop cards in the rewards chests? Are these airdrop cards akin to the Promo cards from years past?