Flind

Flind
When gnolls are weakened, they seek out isolated settlements, maim and disable its inhabitants, and feed upon them as they rest and regain strength.
A flind is an exceptionally strong and vicious gnoll that commands and directs the war band it is a part of. It wields a flail imbued with powerful magic by Yeenoghu himself.
A war band can have only one flind, and that creature sets a war band's path. Because of its special connection to Yeenoghu, a flind uses god-given omens and demonic insight to guide the gnolls toward weak prey ripe for slaughter.
Unlike other humanoid leaders that might skulk behind their minions, a flind leads the charge in battle. Its flail causes wracking pain, paralysis, and disorientation in those struck by it.