Call for Aid

You can use this command ability once per battle when a friendly REDEEMER unit with 5 or fewer models is destroyed. If you do so, pick 1 STORMCAST ETERNALS HERO on the battlefield. A new replacement unit identical to the unit that was destroyed is added to your army. Set up that unit wholly within 12" of that STORMCAST ETERNALS HERO and more than 9" from all enemy units.