Flame Heart

Flame Heart is required in making the following lower headgear at Justin: 100 pieces are required for each. A run at the Endless Tower can give 126 pieces.
 * Staff of Inferno
 * Axe of Inferno
 * Blade of Inferno

It is recommended to hunt the red Ferus in abyss_02 as it also drops Red Bijou which is needed for those inferno headgear.