If I've got Elrond and Herd Baloth on the field and cast the Cryptic Annelid I showed you earlier, I'll pay four mana, scry 1, scry 2, scry 3 and end up with an additional 17 power on board in the form of three 4/4 beast tokens, a 1 power Cryptic Annelid and six +1/+1 counters
As black is chock-full of effects that deal damage to their controller, Vilis can draw insane amounts of cards for its controller over the course of the game, even serving as a disincentive for opponents to attack you
If you have enough minions on board, just letting them die could win the game without you even attacking anyone
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Jekyll and Mr
5 Blue-Black-red Grixis The best decks for blue, black, and red Treasure are ones that also focus on pirate creature types, which are full of cards that also create Treasures