Keeshar

How to Tame
Taming Keeshar requires a crafted item called the Immortal Curtain, which is made from the Cloying Curtain Recipe. The Cloying Curtain Recipe drops off of three commanders. Warlord Urvus (elite) who can be found hovering over an island just west of Eclipsed Shrine at around 590m, Warlord Teranus (elite) found on an island southwest of Eclipsed Shrine at around 500m, and Warlord Goratos. The recipe requires 3x Fallen Legion Mark, 1x sealed Bonethorpe, 70x Familiar Orbs, and 20x Elite Taming Potions.

Sealing Details
Seal stones are items that allow you to seal tamed familiars in order to either socket them into your gear for bonus stats or used to give talent points. When you seal this mount away with a seal stone in order to use it on equipment enhancing, you get these stats: Magic Critical Damage = 140-169
 * Level 40

Physical Defense = 66-80

And when you use the sealing stone to get talent points you get: Talent Power: 180