This unit gets Accuracy 1 when attacking a multi-arena unit.
As long as you have another Fortification in any arena, this unit gets Area Damage 2.
Keywords
Accuracy
Accuracy X/-X: A cumulative, static ability that means, "Add X to each of this unit’s attack dice." and "Subtract X from each of this unit’s attack dice." respectively. Accuracy can’t alter "natural" rolls to affect Critical Hit, Fury, or Parry, but it can affect your chance against Armor. If a unit gets the Accuracy ability after you roll attack dice, it's too late to affect the hits.
Area Damage
Area Damage X: A cumulative, triggered ability that means, "Whenever damage from this unit's attack causes a unit in this arena to be discarded, this unit may do X dice of damage to another unit in this arena."
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.