This could be the top end that pushes a midrange black deck into viability, at least in my opinion
Released in 2009, Magic 2010 (M10) marked a major turning point for Magic: The Gathering, introducing new design philosophies, updated rules, and a fresh approach to core set gameplay
Then, using two pieces of fast mana like [[Gemstone Caverns]], [[Simian Spirit Guide]], [[Lotus Petal]], or [[Mox Diamond]], you can flash him in on your opponents turn before your first one even starts
Usher allows us to get something on those turns, even if its not the most impactful thing in the abstract
However, you will still need to be cognizant of the fact that this deck, more so than most others, is all about teamwork