Argyrum-pattern Boarding Shield

An Argyrum pattern boarding shield provides a 5+ Invulnerable Save against Shooting Attacks in any Phase that increases to 4+ against any attacks made while engaged in an assault. Invulnerable Saves granted by an Argyrum pattern boarding shield do not stack with other Invulnerable Saves and cannot be modified by any other special rule. If a model has another Invulnerable Save then the controlling player must choose which one to use. In addition, a model with has another Invulnerable Save then the controlling player must choose which one to use. In addition, a model with an Argyrum pattern boarding shield may not make attacks with any weapon that has the Two-handed special rule.