If you want to unlock powerful loot chests from Lair Bosses in Diablo 4, you need to gather specific boss materials. There are five Initiate Lair Bosses, three Greater Lair Bosses, and one Exalted Lair Boss, Belial, Lord of Lies. Each boss needs different materials like Living Steel, Distilled Fear, Malignant Heart, or the Betrayer’s Husk for Belial. Gathering these materials isn’t...