Contagion Clasp is a much better card for your
Throne of Geth. It requires 4 mana to activate, but you can activate it repeatedly, whereas your throne will more than likely sacrifice itself to proliferate once. Other than that, this looks like an annoyingly aggressive build. I would also suggest a
Maelstrom Pulse as a part of your removal suite, but that's not completely necessary depending on how fast this deck actually plays, and I just am not seeing how fast it could play by looking at the list.