As mentioned, the downside of these new Saga Creatures is all upside when Narci is in charge
Cultivate is one of the best though, because it not only puts a land card into play, but also puts one in your hand
I may be on board with spending extra for a box thats prettier that you like it as long as its equally as protective, but Id never recommend spending less for the same reason
So if you have ways to sacrifice creatures for value something that Grixis (blue/black/red) has plenty of ways to do you can get even more value out of them
Unlike most of the prowess-style team pump triggers, Balmor also grants trample , which gives it the evasion these effects crave
Multicolor Abrupt Decay Again, strong permanent control, and can't be countered