Heart of Iron

 is a cluster jewel only notable passive skill. Either it is non-unique rarity and has the enchantment:  or, or a  which drops as a corrupted item and has 3 random cluster jewel notable passives.

Unique items
The following unique items are related to :

Trivia
The icon of this passive is shared with many other cluster jewel-only notables, such as Dragon Hunter, Enduring Composure, Uncompromising and etc.

Version history

 * Introduced to the game.
 * }