Thats all more than enough to win the game with one or two attacks, but it even shuffles itself back into your library if it ends up in your graveyard, which is a nice little bonus
If the last target of Burn Together is an illegal target as the spell resolves but the first target is still legal, Burn Together will still resolve and you'll still sacrifice the first target
By hiding your counter in the exile zone, you are almost assured it will be available when you need to shoot a spell down
In some cases, black can go further still, purging all copies of an essential card from an opponents deck
The deck itself strayed towards being a little too safe, and Id actually argue that while Brudiclad was good for the game, he was wrong for this deck (it needed another strong design centering an artifact strategy)
Mox Pearl was fourth because of Balance and sometimes Swords to Plowshares, leaving the Mox Emerald for last