Gravis Praesidium Shield

A Gravis Praesidium shield confers a 4+ Invulnerable Save, this does not stack with existing Invulnerable Saves and if a model has more than one such save the controlling player must select one to use against any Wounds inflicted on that model. In addition, a model with a Gravis Praesidium shield cannot claim bonus attacks for having more than one melee weapon, or make attacks during the Assault phase using a weapon with the Two-handed special rule.