Ultimate Box Toppers Perhaps the most complicated parts of Ultimate Masters are the Ultimate Box Toppers
And if played early, it's an excellent rattlesnake to shake at your opponents: Don't go wide, or else
Besides only hitting your own graveyard, this Boros sorcery will grant haste to all those recently returned artifact creatures youre running, for just 1 more mana than Open the Vaults
If some of the creatures are illegal targets as Glint Weaver's triggered ability tries to resolve, the original distribution of counters still applies and the counters that would have been put on the illegal targets are lost
Think of it like eBay, but built specifically for cards
Cats are a pretty low-to-the-ground creature type, so the best way to take advantage of Arahbo, the First Fang in the command zone is to play a bunch of low-cost creatures, like Helpful Hunter and Lion Sash, to quickly build a board