Skarbrand can never lose his Frenzy. In addition, while Skarbrand is alive, all units within 12" (friendly and enemy) of him are subject to the rules for Hatred.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
Skarbrand can never lose his Frenzy. In addition, while Skarbrand is alive, all units within 12" (friendly and enemy) of him are subject to the rules for Hatred.