since gravestorm is like normal storm, each copy resolves individually, so even discounting the ability to exile cards from our opponent's library, what we have is a card that forces our opponent to shuffle their library a whole bunch of times (once for each copy)
All in all, this is a fun deck with an interesting style
While mana is of course critical for playing Magic , it's rare that a mana base is what causes games to be unfun or warping for other players, which is what the focus is on here
Chandra, Pyrogenius Another Planeswalker deck card, another dud with Chandra, Pyrogenius
Ever since M13 rotated out and took with it the Rootbound Crag cycle, which Theros replaced with Temples, Standard has been heavily biased against multicolored aggressive decks simply because the available mana wasnt good enough to support them