Shards
Shards are gemlike artifacts that slot into your Defenses, Armor and Weapons and they can give you extra buffs, bonuses and sometimes even new functionality! Shards can be moved between pieces of gear and be upgraded straight from your inventory.
Hero Shards
These shards exist to help further power your hero in new ways as these types focused around the hero themselves. A weapon or piece of armor is allows to hold up to 2 Shards and can only equip Hero Shards.
Defense Shards
Defenses can hold up to 3 Shards and can only equip Defense Shards.