Ultra-Budget Dimir Draw Two While 16 rares isn't a bad price on Arena , especially considering that half of them are the eight dual lands, I'm not sure it's really possible to make the deck much cheaper than it is currently
While negated by careful play, Mangara, the Diplomats abilities are dangerously easy to activate
Certified bomb
One could argue that Silent-Blade Oni can give you more options, as you look to an opponent's hand: however it costs more, both in casting and with ninjutzu, with more specific color peeps, and doesn't let you play lands
Chainers Edict, Consuming Vapors, Custodi Lich, Dead Drop, Devour Flesh, Diabolic Edict, Gatekeeper of Malakir, Geths Verdict, and others are among just a few of the spells that can cause an opponent to sacrifice a pro-black critter