Each time a MEK, ORKS WALKER or GROTS VEHICLE unit from your army is selected to shoot or fight, roll one D6. Until the end of the phase, weapons equipped by models in that unit have the corresponding ability shown in the table below.
Alternatively, when such a unit is selected to shoot or fight, you can select one of the abilities above instead of rolling the D6. If you do, until the end of the phase, weapons equipped by models in that unit have the ability as well.
If a weapon equipped by a model from you army has the ability from multiple sources, each time you take a Hazardous test for that weapon, it is failed on a roll of a 1-3.