Originally Posted by
Negator77'
I keep the boarding vs Delver to a minimum. From your list, the only cards I'd bring in are the 4th Needle and the two Abrupt Decays to fight any Needles, move a flier out of the way, or blunt their clock. NOTW can most likely be shaved since the the black delver decks have been straying away from bounce and towards Diabolic Edict.
UR delver is different since they are often sans Wasteland. Shave Needles in that scenario instead since they are more likely to have bounce and/or Blood Moon
3/3 is probably the most common split. I've seen 4 Wastes plenty of times, but have seen 4 walkers plenty too. I'd expect three wastes, 2 Lily, 1 Jace on average.