Equip: A selective effect on Equipment activated during the build step that means, "Attach this Equipment to a unit. Play only during your build step." You can pay the Equip cost only once per turn.
Ion Cannon
Ion Cannon X: A cumulative, static ability that means, "This unit may attack a unit in the Space arena instead of the Ground arena, using X power plus any other effects." You choose whether to use Ion Cannon to attack a unit in the Space arena or to make a normal attack in the Ground arena. You can’t attack a unit in the Ground arena using Ion Cannon. Power changes affect Ion Cannon.