Varla-Born Wolf

"The eerie glow of those born from Varla-touched wolves, as the Nenalata called them, intensifies when a rider uses Varla-embellished barding. Such wolves possess a sure-footedness that lends them stealth despite their glow."—Beredalmo the Signifier.

Source: in-game description.

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