Source: Inner Sea Temples, pg(s). 55
Echataxun is a nalfeshnee sent by Treerazer to destroy the Calistrian temple of Imvrildara. The nalfeshnee was perpetually sealed in stone after being defeated in single combat by Alendeil, a priest of Calistria, at some point after 2497 AR. Echataxun's petrification was deemed to be a Calistrian miracle. The petrified form of Echataxun is now held in the Stone Library of the temple, and used to provide information to the Calistrians via the harvest knowledge spell.