If able to, Nekaph must always issue and accept challenges. When fighting in a challenge, Nekaph gains a 5+ ward save, and his Killing Blow will take effect on any To Wound rolls of 5+.
Source: Warhammer Fantasy: 8th Edition
If able to, Nekaph must always issue and accept challenges. When fighting in a challenge, Nekaph gains a 5+ ward save, and his Killing Blow will take effect on any To Wound rolls of 5+.