It seems exceedingly unlikely that anywhere close to that number of boxes were opened, considering that back in 2014, the total revenue of the Magic brand was estimated to be somewhere around $250 million, which takes into account four big sets a year, supplemental products, and Magic Online , so there is no way a single set could bring in anywhere near $225 million
Nonetheless, I was almost immediately sold on the winner for this category: Machinist's ArsenalMachinist's Arsenal
You are setting up an opponents creature for death, and then you can let someone else kill it to get cards and life, in a nice flurry of card advantage akin to a Veteran Explorer or somesuch
While being a powerful card in the right deck, it did see a lot of play and was pretty consistent
Legendary Creature Demon Mercenary Mythic Victor Maury 6/5 LEGAL Standard LEGAL Future LEGAL Historic LEGAL Timeless LEGAL Gladiator LEGAL Pioneer LEGAL Explorer LEGAL Modern LEGAL Legacy NOT LEGAL Pauper LEGAL Vintage NOT LEGAL Penny LEGAL Commander LEGAL Oathbreaker LEGAL Standardbrawl LEGAL Brawl LEGAL Alchemy NOT LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern NOT LEGAL Predh Flying, trample Whenever you sacrifice another creature, exile cards equal to its mana value from the top of target player's library