Ordinatus

The Ordinatus is a titanic war-machine of the Adeptus Mechanicus, a tracked, crawling leviathan built around a single weapon so vast that no Titan could ever hope to bear it. Each Ordinatus is a unique relic, hand-crafted across centuries upon the forge-worlds and named as a war-hero in its own right, its machine-spirit ancient and wrathful. Some mount sonic destructors that shake fortresses to rubble, others colossal beam-cannons or magma weapons capable of boiling seas and cracking bedrock. Ringed by Skitarii and served by a priesthood of enginseers, an Ordinatus advances slowly to war, but where its single terrible shot falls, armies and citadels alike are simply unmade. Often they grind to battle alongside the Titan Legions in the greatest of sieges, the god-engines shielding the Ordinatus as it labours into range, that its world-shattering weapon might speak but once and end the battle.