Nereid
Overview
A Nereid is a sea nymph Eidolon summoned by Nadir to assist with water crossings. When summoned, the Nereid emerges from water like a coral reef coming to life, solidifying waves around her into an optical illusion.
Timeline
393 AC - Transforming Lake for Nadir
Nadir summoned a Nereid to transform a lake into a Japanese woodblock-style theater set with removable panels sliding from right to left as if pulled by invisible ropes, allowing him to walk across sandy ground between static rollers resembling the works of Hokusai and Hiroshige.