Making it cheaper to play and cheaper to put on the Aspirant is pretty serious
Other than violently stripping your opponents lands, you could instead look at Flametongue Kavu, Pyrogoyf, Inferno Titan and the like, and play a lot of haste enablers
I still think the removal is weaker than Id expect from a Masters sets (and have thus far seen go-wide aggressive strategies be quite strong), but black has sufficient answers to stymie the faster and creature-centric decks
It better suits green ramp decks and I find I prefer the consistency of just playing more ramp and more threats in those
Anytime you cast an instant or sorcery from your hand specifically during an opponents turn, you suspend it with three time counters when it resolves
But the good news is that Tazri, Beacon of Unity does a lot of heavy lifting for the archetype so at least she will help the deck run smoothly