Well whats more important drawing cards or making them pay 1 more mana per spell? I don't think giving your opponent the choice is a good idea so I would probably replace Rhystic Study with either Mystic Remora or Thorn of Amethyst. I would also probably cut Inkwell (since you already have Sharuum as the big Tinker guy) and Karn (since most of your artifacts already beat) for 2xMaster of Etherium. I suggest trying to take a more Workshop Aggro approach since blue has some really nice recent beatsticks and Crucible/In the Eye of Chaos/Gilded Lotus/Fabricate seem worse than a playset of Tangle Wires. Also Master Transmuter seems to be better than Metalworker since it can put stuff like Sharuum in uncounterable and even ups the blue count if you want to add in FoW. I've always wondered why blue shop decks aren't more popular.
