The 7 mana worries me less since black has things like Dark Ritual, Cabal Coffers, and Crypt Ghast in it's arsenal
Meanwhile, Bloodmoon Ursaluna exis still a premier closer in several decks
I can see how Bargain was conceived
Notably, the Pretender is also a Villain, making it good and selfishly on-theme enough to make Bennie Smith's Doctor Octopus, Master Planner build
P/T Number 658 Language English Legal Formats Commander, Historic, Legacy, Modern, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Pauper, Pioneer, Standard, Timeless Rulings (6/16/2023) You choose the mode as the triggered ability goes on the stack