When one of Meridia's Auroran Knights manifests in Tamriel, and needs a mount, the knight has the ability to instantly summon a Daedric Warhorse from the Colored Rooms. Curiously, if the knight is banished to Oblivion, the mount sometimes stays behind.
Crown Store items are purchased in the in-game Crown Store. To buy any of the Crown Store's special items, you'll need crowns, a virtual in-game currency. Crowns can be purchased in packs of various sizes, and you'll receive a discount on larger packs!
You can get a monthly allotment of Crowns by signing up for an ESO Plus membership! Learn more about member benefits.