Isochron control baby!
Most of the spells coupled with Iso can lock someone out quite easily.
Jace, Luminarch Ascension (for beat), Celestial Colonnade (for beat), or Phyrexian Metamorph (for beat), are the win-cons.
More often than not though, your win-con is your opponent quitting ;)
-Isochron Scepter
Iso+Remand - Counter, deck (through discard), and card draw? Wow.
Iso+Lapse - opponent always draws the same card forever! Excellent.
Iso+Orim's - activate during opponent's upkeep, and opponent can never play anything? Word.
Iso+Swords - if any creatures ever make it out, buh-bye ;)
Iso+Boomerang - Pretty obvious. The best is when you are at the point of boomeranging their lands back (because they don't have anything else out) and they will NEVER BE ABLE TO PLAY ANYTHING. This is extremely valid when you have 2 Iso-Boomerangs out. It can also bring back your Metamorph if you want to play it again and copy something new (but why would you want anything other than a copy of Iso? : p)
-Enlightened Tutor to Grab Iso/Phyrexian Metamorph (thanks dragin17 for reminding me!)
-Phyrexian can copy an Iso, allowing you to exile a card from your hand and imprint it on the Phyrexian Iso (that sounds pretty cool doesn't it?) It can obviously copy an opponent's creature to beat them up with (if they get one out/you allow them to get one out) before you exile/boomerang it. And last but (definitely) least, you can copy an activated Celestial Colonnade for whatever reason (another beater? REALLY need that extra land?), although this will NEVER happen...it would cost 8 mana at the very least...
-Academy Ruins is one of the best lands for blue/artifact decks, period.
-I changed out Glacial Fortress for Hallowed Fountain because access to a turn 1 white mana to play Enlightened Tutor can make all the difference.
SIDEBOARD
-Tormod's - graveyard-into-library hijinks
-Meddling Mage - specific threats
-Chill - red decks
-Spreading Seas - multi-colored decks (and card draw!)
-Day of Judgement - board sweep (because you are more often than not going to have a creature-less board on your end)
This deck is expensive, but the joy of completely shutting down your opponent is worth the price.a
---FOR BUDGET---
-you can trade out the Hallowed Fountains and Flooded Stands for slightly less good dual lands (Sejiri Refuge, Glacial Fortress, etc.)
-drop the Jaces for some other effective certain win-con (I just like Jace because he's...well, the man), or you could even up two of your 3-of Iso spells to 4-ofs. Your choice!
-use Silence in place of Orim's Chant. You lose the ability to pay that cheap kicker to stop creatures from attacking, but generally your opponent shouldn't have any creatures out against this deck anyway
Making those changes will put this deck closer to about $125 (not considering what you replace those cards with), which is MUCH more manageable to buy than $450. It won't work QUITE as effectively without those beautiful lands, but there are plenty of decent lands out there. You should still be able to control almost every game, no problem.
You can also take out the 4 Enlightened Tutors (and use Muddle the Mixtures instead) to drop the price even further to about $75, but THIS IS NOT RECOMMENDED. You WANT those Tutors. You NEED those tutors. Playing this deck without them is a huge gamble, and playing Magic is already a gamble enough.
-Edit-
Replaced Lightning Helix with Mox Diamond. Lightning Helix is basically unplayable without Iso, and a possible turn one Iso is pretty great.