Grim Champion of Bloodshed

Grim Champion of Bloodshed
Wynemar Brack was once a farmer, but mercenaries in a local war razed her fields and sacked her village. In desperation, she yielded to the clever patter of a traveling fortune teller and drew from a Deck of Many Things. The avatar of death slew her in a flash. That was many centuries ago, and Wynemar is now a powerful and bloodthirsty Undead commander of the Grim Harrow.
Wreathed in searing fire, Wynemar embodies the havoc of violence and war. She rides a flaming steed that uses the nightmare stat block but is an Undead instead of a Fiend.
The Grim Champions
The Grim Harrow is led by three powerful entities with the title of grim champion. Each champion embodies a terrible facet of death. Jyn Corvis, Grim Champion of Desolation, is the oldest and most powerful of the three and embodies all-consuming nothingness. She led the Grim Harrow to the Gardens of Delight long ago and is the nominal leader of all the Undead in the demiplane. The other two champions—Wynemar Brack, Grim Champion of Bloodshed, and Aleron, Grim Champion of Pestilence—rival Jyn for power and together can oppose her. The fact that the three champions rarely agree on anything is a major check on the group's power. Instead of the Grim Harrow acting as a unified force, each of the three champions usually pursues their own interests, seldom cooperating or sharing intelligence or resources.