Gandarewa
Gandarewa is a Rank S Elite Mark found in The Churning Mists.
Gandarewa is a Rank S Heavensward Elite Mark found in The Churning Mists.
Killing the Elite Mark will reward the player up to 
100 Centurio Seals, 
100 Allagan Tomestones of Poetics and 
30 Allagan Tomestones of Aesthetics.
Coordinates
The Churning Mists
(x28,y20), (x28,y10), (x7,y10,z1.7), (x7,y20), (x12,y21), (x17,y28), (x??,y??)
Spawn Conditions
Trigger
Harvest Aurum Regis Ore (Legendary Mining Node, slot 6) or Seventh Heaven (Legendary Botany Node, slot 1) from Legendary harvesting nodes. They spawn at 2am/pm and 4am/pm, respectively.
Time
80 to 132 hours after it's been killed; or alternatively 50 to 80 hours after maintenance has ended.
Additional Information
Description
"It isn't only the dragons who have brought heretics into our midst, you know. Five hundred years ago, another heretical sect gained traction among the smallfolk of Ishgard.
The heathens adopted the customs of the Near East, bathing themselves in perfumes brewed from strange flowers and forging idols from rare metals that they used in their bizzare and unholy rites.
Naturally, the Temple Knights were quick to clamp down on the sect's activities. Its leader, a peasant who styled himself the great guru Gandarewa, fled to the next holiest place he knew--the sacred mountain of Dravania. There he supped on the blood of a dragon, and was forever changed..."
~ Eustacia of The Forgotten Knight