Posting an offbeat list I played to 3-2 finish in a league last weekend. Not running sideboard cards for Delver was an oversight, I expect it would have been an easy 4-1 if I had. The list as posted has a serious problem handling an active Young Pyromancer, even when you're seriously outdrawing your opponent, so a handful of Slice and Dice (or your favorite Pyromancer removal spell) would go a long way.
The list can draw a ton of cards, and cascade makes you suprisingly counter resistant, despite not having access to cheap counterspells.
As Foretold didn't do much, but it was threatening enough to draw opposing countermagic. I suspect I want more than 0 but less than 4. Reviewing the list in retrospect, Jace, Vryn's Prodigy has less to do here than it usually does, but I'm not sure I want anything else more.
This definitely could support more Null Rods, which might be correct in the meta right now.