The 1-Hour 8x XP Boost increases your combat experience 700% for 60 min.
Used most effectively when you know how to attack and keep several bases in tandem which yield good experience shortly that you can do with 3 warps. As of April 2, 2012, Combat strategy has been renamed to 1-Hour 8x XP Boost.
Can be found in store (
45), won by Zoot's Loot, the Level-7 Colony Warp Mission, and the Level-10 Bomba Mission. Master's Kit also comes with 2 and Warrior's Kit comes with 1.
You can also receive one from the daily rewards.