This isnt the easiest hoop to jump through, but a single counter means a lot (especially when paired with Proliferate cards, especially at instant speed)
Laelia's exile payoff lessens the blow of whiffing when you impulsively draw as youll still get a buff when you do
Up til that point, black decks are able to draw cards, destroy creatures, and harass their enemies without worrying about a thing
Rowan, Scion of War Suggested Cut: Rakdos, Lord of Riots Rowan, Scion of War serves a very similar purpose as Rakdos, Lord of Riots, but in my opinion, itll be helpful more often
When it dies it gives each opponent Rad counters equal to its power
Even if you dont include the Lattice lock, Karn does let you return the artifacts you exiled to your hand