Plaguewater Swamp Skeever

"The first time I saw this skeever at my doorstep, I praised Peryite. Then prostrated myself, as this steed warrants. I'd been called into the world from my cave hideaway. Now we share my Prince's blessings wherever we travel."—Plague Elder Anai No-Nose

Source: in-game description.

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