As the Ashen One, players must bring back to their throne as part of the linking the fire ritual.

Source: https://gamerant.com/longest-fromsoftware-games/

In that expanded story, the Ashen One is transported forward in time to the titular city that Gwyn gifted the Furtive Pygmy for helping overthrow the Everlasting Dragons.

Source: https://www.cbr.com/dark-souls-fromsoftware-most-important-lore-info-new-players/

Much of the same advice given about Lord's Heal can also apply to this spell, though obtaining it will require players to reach the Queen's Bedchambers in Leyndell, Ashen Capital.

Source: https://gamerant.com/elden-ring-best-incantations/

The stack of Ashen Nightstar created by the Normal Attack, Charged Attack, Elemental Skill or Elemental Burst will be counted independently of the others.

Source: https://gamerant.com/genshin-impact-best-weapons-aloy/