The Trial of the Mighty Foe

The Trial of the Mighty Foe is a side quest in Hyrule Warriors: Age of Calamity.

Overview
The Trial of the Mighty Foe is a side quest that can be unlocked after completing the Scenario, "Destroy the Yiga Clan!" in Chapter 4.

There will be three quests that can make you qualify for The Trial of the Ancients, and this is one of them. It can be found in the Faron region.

The requirements needed to complete this are 10Ethereal Stones, 1 Stone Talus Trophy, 3 Hinox Trophies, and 3 Lynel Trophies.

The remaining two needed to qualify for The Trial of Ancients are The Trial of Monsters and The Trial of Stones.