Twisted Image is cool, and I can get behind maindecking it, but Gitaxian Probe is not needed in such a high amount. Chances are, you're gonna need 1 in a game, at most, to plan better, since you'll usually just wait until the coast is clear to go off anyway. I also think 4/4 in Ponder/Preordain is just too much, not sure it's needed, I'd probably maindeck Pyroclasm to stay alive, and be happy playing the other. 1 less Shrine could probably also make the cut, and I've seen some lists running 1-2 See Beyond, which while not optimal, is also no terrible, either, a lot of times I'm stuck with 2 twins. 1 Inferno Titan at the top end, or 1 Consecrated Sphinx (or even a 1/1 split) might also be a good backup plan that happens to complement the main plan. I'd never run the deck without Spellskite, though, since Go for the Throat is quickly falling out of flavor due to Tempered Steel being a real deck and Wurmcoil Engine making its way back into some decklists.