Wise Deva

Description
Wise Deva is a tamable Elite familiar that can be found roaming in the Terminus Dunes of Cloying Wastes. The player will need to possess Deva Mark to be able to tame Wise Deva. "When giant sandworms appeared at the Terminus Dunes, other creatures fled. The god Nerhes created Deva, knowing that the sandworms, with their limited intellect, would need help. Deva discerned that the sandworms would eventually destroy the desert's ecology, so she watched them from a distance. Her most prominent feature is her horns, which are likely the source of her wisdom. To acquire Deva's vast wisdom, you'll need her mark, which you can create with desert turtle carapaces via barder crafting. Obtain a clue about the mark from Shakiba's enthralled spirit leader near Shakiba's lair."

― From Potzel's ecology report

Strategy
Wise Deva can be found walking around various areas of the Terminus Dunes. There are generally no other hostile enemies within proximity so you will most likely not have to worry about being attacked while taming.

How to Tame
In order to tame Wise Deva, the player must obtain a Deva Mark. The mark can either be crafted from Deva Mark Recipe or can drop from offering boxes in Elite and Heroic difficulties of the Temple of Sands dungeon. Once the mark is obtained, Wise Deva can be tamed. Since Wise Deva is an Elite familiar, lower its HP as much as possible without killing it to increase your chances at successfully taming it.

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:

And when you use the sealing stone to get talent points you get: Talent Power : 50

6x sealed Wise Deva are used in crafting a Dredrum Mark.