Emerald Herald
The Emerald Herlad is an NPC woman standing near The Far Fire in Majula. she provides the player with an initial Estus Flask, upgrades the flask with Estus Shards, and assists characters in Leveling Up.
The Emerald Herald will also appear in various parts of the game, once as you enter Drangleic Castle, at the entrance of the Dragon Aerie where she gives you the Aged Feather and a third time as you get the King's Ring in the Undead Crypt. Her final appearance is behind the King Door in Drangleic Castle. She appears on the left, before you walk down the path to the Throne Room.