>But the Axe Morkai was not of the Imperium. It had first been forged as a weapon of Khorne, bane of sorcerers.
Logan leapt. The double-headed power axe slammed into Magnus’s chest, shattering arcane wards and piercing his breastplate to bite deep.
In the distance, thunder rumbled long and loud. Only the psykers present heard it for what it was – the laughter of the Blood God himself. (Wrath of Magnus, 7e)