Welkynd-Born Courser

"Pregnant mares imbued by a Welkynd stone in a lengthy ritual may bear these steeds, my sources say. Additionally, as the Nenalata evacuated, they took with them glowing barding that bolstered these steeds' tirelessness."—Beredalmo the Signifier.

Source: in-game description.

This model has additional visual effects applied to it in-game.