Catrina

She arrives extremely well dressed. Wide hat, feathers, good gloves, and beneath all of it a skull, and she is entirely at ease about the arrangement. She is not here to hurry anyone. She is here to make a point, which is that the hat and the gloves and the family name have never once made a difference, and that the person she has come for has spent a great deal of effort pretending otherwise. She is unfailingly courteous. She will wait through dinner.

The Point Made: 30 ft, save Wis Mind, fail save roll 3d6+3 psychic, scaled to what the target has staked on standing - a creature that is genuinely humble, or honestly indifferent to rank, takes no damage at all and she does not raise her hand; an ordinary creature takes the full 3d6+3; a creature that has traded on rank, wealth, name or reputation during this adventure takes double damage. The DN judges from play, not from the character sheet. Cooldown 3 rounds. Gloved Hand: necrotic, melee 5 ft, +4 to hit, 3d6+3, offered like a handshake.

Cannot Be Driven Off: she does not flee, and reduced to 0 HP she simply is not there any more and is waiting outside. Courtesy: she responds to good manners with good manners and will accept an invitation to sit, eat, or talk, and while she is doing that she is not doing anything else. This is a genuine delay and a party can use it. Everyone Ends Here: she cannot be permanently destroyed, and no creature has ever needed to be told twice what she is.