Myrna Rath

When a night hag rides a nightmare, the nightmare also gains the night hag's status bonus to saves against magic, and both the hag and rider benefit when the night hag uses her heartstone's Ethereal Jaunt innate spell.

As long as at least one other member of Myrna's coven is on the demiplane of Stormholt, the coven members add chain lightning, lightning bolt , plane shift , and punishing winds to their spells, each of which can be cast at up to 8th level.

A creature can't recover from drained until Abyssal plague is cured

Saving Throw DC 41 fortitude

Stage 1 drained 1 (1 day)

Stage 2 drained 3 (1 day)

The night hag can take on the appearance of any Medium female humanoid. This doesn't change her Speed or her attack and damage bonuses with her Strikes, but might change the damage type her Strikes deal (typically to bludgeoning).

If a night hag is ethereal and hovering over a sleeping chaotic or evil creature, she can ride the victim's back until dawn. The creature endures tormenting dreams as the hag casts Nightmare on it, and is exposed to abyssal plague. Any drained caused by dream haunting is cumulative. Only an ethereal being can confront the night hag and stop her dream haunting.

A creature Off-Guard to the night hag takes a -2 circumstance penalty to checks and DCs to defend against her spells.