See p86 of the Leagues of Votann Codex and associated updates and errata.
- This unit can ignore any or all modifiers to its Move characteristic and any or all modifiers to its Advance or charge rolls. - Each time this unit Advances, do not make an Advance roll. Instead, until the end of the phase, add 3" to the Move characteristic of each model in this unit (add 6" instead if this unit is ACCELERATED).
- Each time an attack is made against this unit, your opponent cannot re-roll the wound roll and cannot re-roll the damage roll. - Each time an attack is allocated to a model in this unit, the Armour Penetration characteristic of that attack is reduced by 1 (to a minimum of 0).
Each time a model in this unit makes an attack with a ranged weapon, the target does not receive the benefits of Dense Cover against that attack.