The sudden appearance of those armored individuals started the pushback that the Fingers were going to attempt as they had them rush forwards in aid of the monsters guarding their walls; the mana that radiated off of their armored bodies was enough to let us know that they were rather strong, be it thanks to their natural capacity or because of the enchantments layered over the metal.
Each of these armored individuals were equipped with an enchanted weapon and a thick shield that added another layer of defense to their charge, and when the Ritual Circles engraved into the middle of those shields flared up to shroud them in mana they were further protected from the spells that crashed down around them.