Gorechild revved for the first time since its rebirth, eating air with the throaty snarl of an apex predator. That interruption was the only answer Khârn would give, and Erebus raised his crozius in reply.

‘Come then.’

Three blows. The first: Khârn smashed the maul aside with the flat of his new axe. The second: he cannoned a headbutt into Erebus’s nose, breaking cartilage with a wet crunch. The third: Gorechild tasted first blood, ripping across the Chaplain’s chest, carving a canyon of flesh over the dense subdermal armour of the warrior’s black carapace torso implant.

All of this happened in the time it took Erebus to blink. No one could move as fast as Khârn moved. No one human, and nothing mortal. The Chaplain threw himself backwards, crozius up high to guard. - Betrayer pg 230