I actually don't like a few aspects of this list.
Bedlam Reveler - This seems really bad with 9 counter spells, 4 of which replace thrmselves. This could honestly just be a single copy of Ancestral Visions.
Nimble Obstructionist - I don't understand why this card over Clique. Sure, sometimes you get to counter a expeition map activation or stone rain someone but Clique answers cards before your opp can play them AND you can always target yourself.
4 Remand - I have never really liked Remand in Delver decks and lke it even less with thr printing of Fatal Push. Twin could maximize on Remands because it could cantrip into a win. Delver is aggrressive, but games still take some turns to finish.