One of your units gets Cunning (Roll this unit's attack dice secretly. Show them to your opponent after damage prevention.) until end of turn. Play only when no unit is attacking.
Keywords
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.
Cunning
Cunning: An isolated, static ability that means, "Roll this unit’s attack dice secretly. Show them to your opponent after damage prevention."