Thunder Hammer

A model that suffers one or more unsaved Wounds from a weapon with this special rule is reduced to Initiative 1 until the end of the following Assault phase.

A model attacking with this weapon Piles In and fights at Initiative step 1, unless it is a Monstrous Creature or a Walker.

A model fighting with this weapon does not receive +1 Attack for fighting with two weapons unless it is armed with two or more Melee weapons with the Specialist Weapon rule.