The most likely place would be either U/B or U/W Control with Dragonlord Ojutai, Dragonlord Silumgar, or Ugin, the Spirit Dragon
At the beginning of combat on your turn, each opponent faces a villainous choice That player sacrifices a creature of their choice, or you create a 3/3 black Dalek artifact creature token with menace
Halo foil: $26 to $27 Foil etched: $7 to $8 Showcase foil: $5 Extended art foil: $9 Regular: $4 to $5 Ob Nixilis, Captive Kingpin Halo foil: $45 to $50 Showcase foil: $15 to $17 Foil etched: $12 to $13 Extended foil: $12 to $13 Regular: $9 to $10 Rakdos archetypes continue to get support from WotC through Ob Nixilis, Captive Kingpin
If you already know TCGs and you've played some, then I totally recommend the single-player decks
Im lower on the red one, though the blue, white, and green ones should see plenty of play