Help 
Strago confront 
Hidon and prepare for his rare Lore.
On this page
Open the cave
In the World of Ruin, take Strago and 
Relm to Thamasa and follow the conversation with Gungho. Ebot’s Rock becomes accessible north of the village. Bring healing, status recovery and a save before entering; its room connections use warps rather than a simple linear path.
Step on the floor warps and open chests to collect coral. The talking chest blocks the route to Hidon and wants a sufficiently large offering. Collect at least 22 pieces before feeding it; offering too little consumes the collection and means gathering again.
Face Hidon
Hidon appears with four smaller enemies. If learning Strago’s rare Lore is your goal, bring him in the active party, remove the smaller enemies and allow Hidon to use the relevant attack before ending the battle. Keep Strago alive through the fight and check his Lore list afterward.
A quick victory and learning the Lore are separate objectives. Save outside before attempting the fight. Hidon can be encountered again after speaking with Gungho in Thamasa, but the conditions and translated Lore name should be checked for the edition you play.
Return
After the confrontation, return to Thamasa for the conclusion. The cave is optional and does not gate Kefka’s Tower. If the warps feel repetitive, concentrate on finding fresh coral chests and return to the talking chest only when your count is high enough.