A Diestro must always issue and accept Challenges. Enemy characters must pass a Leadership test if they want to decline the challenge. While in a challenge, the Diestro may re-roll failed rolls To Hit and To Wound.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
A Diestro must always issue and accept Challenges. Enemy characters must pass a Leadership test if they want to decline the challenge. While in a challenge, the Diestro may re-roll failed rolls To Hit and To Wound.