A large panther, with batlike wings. It is clearly a predator of some kind, but its natural habitat and place in the food-chain of Dragaera is somewhat unclear. (Possibly feeding on wild norska or kethna.) Presumably, it would be comfortable in the mountains, given the wings, and the resemblance to a mountain lion. A reasonable picture of a tiassa can be found here, by Katherine Grantham. This article is a stub. You can help the Lyorn Records by adding to it.