Demon's heart (darkness)

A demon's heart is a drop from the Demon of Darkness. This heart, along with the hearts of light and balance from the Demon of Light and Demon of Balance, are required in imbuing a god cape during the The Mage Arena II miniquest.

Subsequent imbues will require only one heart of the player's choice, in which this heart will imbue a Zamorak cape into an Imbued zamorak cape.

The demon's heart cannot be deposited into a bank, and is always lost upon death, so it is recommended to turn it in to Kolodion as soon as possible.