Once per Shooting Phase, an unengaged Engineer may select a single War Machine within 6″ that has not fired yet to gain the following effects:
- Replace the Aim of one of the War Machine's Artillery Weapons with the value given in brackets (X+).
- You may reroll the roll on the Misfire Table.
- You may reroll the dice (all of them or none) for determining the number of hits of a Flamethrower Artillery Weapon.