Burn 5: Enter or leave Hyperspace, at the end of the round. Whilst in Hyperspace, you cannot be targetted by anything, nor target anything. Ships in Hyperspace are treated as "eliminated" when checking for game winners.
At the end of any round, you may jettison a System to prevent all damage that was dealt to your Ship during that round.
Spend X: All Attacks against you this round are reduced by X/2.
Throw X crew members into the furnace to gain a 3X bonus to all Attacks next round. The total crew expendable in this manner equals this System's System Strength.