Eidolon Hydrolyst

"The Ostrons believe the Hydrolyst is an omen of impending natural disaster. Stories describe a distinct, pungent aroma that precedes the arrival of this toxic beast."

Hydrolyst are gigantic spectral Sentient creatures found on the Plains of Eidolon at night. They are remnants of a Sentient that was defeated in a battle against the Tenno during the Old War, whose remains now wander the plains perpetually searching for their lost components. These fragments are, however, still formidable creatures armed with powerful attacks and near-impenetrable defenses, and are hostile to both Tenno and Grineer alike.

Summoning
Tenno should capture Eidolon Gantulyst and then offer their Radiant Eidolon Shards on Eidolon altar in the middle of the lake.

Strategy
Requires 3 lures to capture