Quarion has informed us of a new Monster Profile:
Type:Outsiders, Devil (bezekira), Demon (jarilith)Environment:Almost any, usually the plane of battleAttack:Claws and biteSpecial Qualities:Stealth, spell-like abilitiesOrganization:Solitary, pair, or pride (6-10)

From the personal journal of Azalai Korias, Elven Wizard:
17 Zarantyr, 999:

I find myself beset by a moral dilemma.
Or, perhaps it's more accurate to say that I see a clear course of action, but I have yet to convince the others that their antiquated notions of right and wrong are clearly causing us more problems than is best for us. While the Ogre Magi lives, the force gate shall remain in place, preventing us from progressing further into the tower. The twist is that the Ogre Magi is safely protected from us by that same barrier. It would, however, be trivial to activate the runes upon this pillar, which should - if my study is accurate - summon a Jarilith on the other side of the barrier that will be at our command. (Or, at least, nominally, and temporarily, under my control.)
What better creature to hunt down and slay the Ogre Magi than one of the elite hunting cats of Shavarath? Khovis has issues with the act of summoning a barely controllable demon to Eberron. Senna objects to the idea of assassinating an enemy leader, but I fail to see the difference between us defeating him directly or through a summoned agent.
While it's almost certain that the Jarilith will turn against us, the creature is guaranteed to achieve our objectives first - the tower is sealed, and it will be summoned on the other side of the barrier. To escape, it will be forced to either slay the Ogre Magi or remove the barrier some other way. After that, we can destroy the creature, banish it, or keep it around as a familiar; it truly does not matter to me.

Lions have always been among the most admired of the wild creatures of the world, and I agree that they are impressive. I once had the great tortune of going on safari in Lammania. (I won a door prize at some pretentious pseudo-intellectual gathering in Sharn once upon a time.) I must say that the trip was excellent. While there I saw some of the most amazing expanses of pure wilderness and witnessed incredible spectacles of animal behavior. Vast herds of beasts roamed huge areas of savannah, and never far from them, lying low among the grass, were tawny wild lions.
As strong and tough as lions are, their power cannot match two other large cat-like
creatures. The bezekira and the jarilith are lion-like evil outsiders who attack ferociously and use their powerful jaws and sharp claws to ruthlessly rend prey and enemies alike. These beasts usually dwell on Shavarath, the plane of endless battle, but often prowl Eberron as well. Inexperienced adventuring parties have been completely wiped out by these maned menaces.