With enough haste enablers, I think that Greven could easily see a resurgence, especially with Staff of Completion now in the format and the hope that the Phyrexians will continue to provide us with cards that treat life as a resource
Peregrination Do we need a 4-mana Cultivate or Kodama's Reach that will scry just 1
Ranar rewards you for casting creature spells
So while Counterspell might be able to deal with any threat, most times you'd be better off drafting Dark Banishing or Incinerate so you could drop early creatures, and then use the removal to mop up afterwards instead of having to wait for your gracious opponent to walk into your untapped Islands
Everytime you cast a noncreature spell, you get to amass Orcs X, either creating an Orc Army token with X +1/+1 counters on it, or adding that many counters to an existing Army token
It might be the bookends of excitement around them or just personal bias, but of all the generals I have talked about this week and last, the next two have gotten the least time in my brain to cook