Before Counterspell became legal in Modern, UW Control would typically play a single Logic Knot
We already see some Azorius Soldiers lists utilizing Lunarch Veteran, which synergizes extremely well here
Things get murkier when you add in the relatively anmeic growth on the extended version
Initially, I think I had problem getting Dark Armed Dragon (DAD) out but after adding Sagan, I mange to summon it too
It doesn't sound like a lot, especially when you have cards like Keeper of the Accord, which can do similar things every turn, but consider this: the land doesn't have to be a basic Plains, and it doesn't have to enter tapped
With Avacyn out, all your permanents gain indestructible, protecting them from all removal except exiling effects