Any friendly unit joined by O-Sayumi may re-roll all failed Leadership tests. Against enemy characters, O-Sayumi may re-roll failed rolls To Wound, and has the Killing Blow special rule.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
Any friendly unit joined by O-Sayumi may re-roll all failed Leadership tests. Against enemy characters, O-Sayumi may re-roll failed rolls To Wound, and has the Killing Blow special rule.