If Borgut fights in a challenge, then at the beginning of the first Close Combat phase of the challenge, he can smash his thick Orc skull into the face of his opponent or any monstrous mount they may be riding. This is in addition to his normal attacks, and is resolved before any other attacks in the challenge. If this attack inflicts an unsaved Wound, the target is reduced to Weapon Skill 1 and gains the Always Strikes Last special rule for the rest of the Close Combat phase. If this mighty 'eadbutt kills his opponent, Borgut can still make his remaining attacks to calculate Overkill for the purposes of combat resolution.