Every time an enemy model suffers an unsaved wound from this weapon, roll a D6. On the result of a 6, the enemy loses an additional wound, with no saves of any kind allowed, and you must roll again. Keep on rolling as long as the result is a 6.
Source: Warhammer Fantasy: 8th Edition
Every time an enemy model suffers an unsaved wound from this weapon, roll a D6. On the result of a 6, the enemy loses an additional wound, with no saves of any kind allowed, and you must roll again. Keep on rolling as long as the result is a 6.