Cold One

When charging, units entirely made of models with Swiftstride and M 7 or higher roll 3D6, discard the lowest result, and add the result to their M value. When fleeing or pursuing, they roll 3D6, rather than 2D6.

When charging, units entirely made of models with Swiftstride and M 6 or lower roll 2D6, and add the result to their M value. Whenfleeing or pursuing, they roll 3D6, and discard the lowest result.

Swiftstride has no effect on models using a M value lower than 4.

Swiftstride M6 or lower
Charging: M + 2D6
Failed Charge: 2D6
Fleeing/Pursuing: 3D6 (discard the lowest)

Swiftstride M7 or more
Charging: M + 3D6 (discard the lowest)
Failed Charge: 3D6 (discard the lowest)
Fleeing/Pursuing: 3D6

The number of Impact Hits is shown in brackets after the rule. If a creature is granted two sets of Impact Hits, use the highest set, rather than a total, before rolling. If a unit contains more than one model that inflicts a random amount of Impact Hits, always roll separately for each model.

Impact Hits are only made on the turn the model makes a successful charge into close combat, and only against the unit the model has charged. Impact Hits are resolved at the very beginning of the close combat, before challenges are issued and attacks of any other kind are made. They hit a unit in base contact and are randomised as Automatic Hits. If the model is in base contact with more than one unit, randomise the Impact Hits between them as evenly as possible. If the model with Impact Hits is not in base contact with the enemy, no Impact Hits are inflicted.

Impact Hits roll to wound using the S of the model making the Impact Hits. Any armour saves taken are done using the close combat value of the armour, and Parry saves may not be taken. Any Wounds caused by Impact Hits are counted towards combat resolution. 

Unless specified, any rules that apply to the model’s normal attacks do not apply to its Impact Hits.

A unit containing one or more Fear-causing model gains +1 to their Combat Resolution bonus. If the Unit Strength of all Fear-causing models is double or more, the Combat Resolution bonus is increased to +2. Note that the bonus from Fear is otherwise not cumulative for having multiple units with the Fear special rule involved in the same combat.

If the majority of the models in a unit cause Fear, they also gain Immunity (Fear), and thus the Combat Resolution bonus is ignored for that unit.

The hide of some creatures forms a kind of natural armour that grants the model an armour save. The resulting armour save will be stated in brackets. Natural Armour can be combined with other armour as normal.

Provided that they are not engaged in close combat, a unit that contains one or more models with Stupidity must take a LD test at the start of its Movement phase. If the test is passed, the unit will act normally this turn.

If the test is failed, it moves directly forwards using Random Movement (D6) in the Compulsory Movement sub-phase. The Stupid unit cannot take any further action that turn, so cannot declare charges or make a shooting attack. However, a unit that has failed a Stupidity test can still be forced to move, or perform any other action, by a spell, or other special rule/magic item.

Until they pass the Stupidity test again, models that have failed their Stupidity test have Immunity (Psychology) and Random Movement (D6), except that they can only move directly forwards. They cannot choose to do a combat reform or choose any other charge reaction except Hold. In addition, Wizards cannot attempt to cast or channel power dice or dispel dice.