Tarr the Terrible is one of the new Grand Master Pet Tamers of WOD.
Start with the Val'kyr. Use Doom, his next round usualy switches so go with Unholy Ascension. On the Swap, grab Blight hawk. Spam Infected Clawuntill he uses deep breath, then its Lift-off to avoid it. From there, its just claw spam until the third pet enters.
On the swap, pop Ghostly Bite. doom should have resolved, so just use whatevers not on CD. Game over.