What are your thoughts on Grapeshot in this decklist?

Bigred77: Grapeshot is actually a pretty good option for this deck. It has some utility as a removal spell and can win the game with infinite storm. I was just thinking of adding walking ballista as my backup finisher to reservoir since it also works as a creature removal spell of sorts and costs nothing to Ad Nauseam. Either grapeshot or ballista will end up in the deck when I make my next revision, which is soon. I will also likely add LED and some other powerful cards to the mix to try and max out this deck before I write a true primer

I'm looking forward to seeing the primer. Best of luck writing it!