A single Thanatar Siege-automata Maniple unit consisting of a single model may be taken as a non-Compulsory HQ choice in a Detachment that includes a model with this special rule. This model must be replaced with a Thanatar-Calix and may not take the Paragon of Metal upgrade. While wholly within 6" of a Thanatar-Calix taken as an HQ choice in this way, friendly Myrmidon Secutor Hosts and Myrmidon Destructor Hosts gain the Line Unit Sub-type and add +1 to the Wounds score used to determine if they win a combat in the Assault phase.
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