4 Urza's Mine
4 Urza's Power Plant
4 Urza's Tower
4 Astrolabe
4 Barbed Sextant
3 Chromatic Sphere
1 Earthquake
2 Kaervek's Torch
4 Pyroclasm
4 Pyrotechnics
1 Slice and Dice
4 Tremor
4 Urza's Bauble
1 Varchild's War-Riders
Sideboard:
4 Lodestone Bauble
4 Starstorm