Black Taps into Unparalleled Efficiency with Cultist of the Absolute Cultist of the Absolute has the coolest name in the set, but it's also the lowest-cost background
Combined with this great Rakdos commanders activated ability, youre essentially also getting generic mana on top of whatever benefit you paid for with cards like Bolas's Citadel or Necropotence
Taking a mulligan on the play and continue to mulligan if our opponent does as well
In my experience, some games just bog down under several stax pieces, and resetting all of them can easily give you a win, but I might play in a relatively stax-heavy metagame
Itll enable Piru, the Volatile to reach past that initial 7 damage, for instance
And they can cast it again for an extra two mana cost