Core of the Blood God

The Core of the Blood God is a craftable post-Moon Lord, Expert Mode-exclusive accessory. It boosts the wearer's maximum health by 10%, causes Health Potions to heal 15% more HP, and provides an 8% increase to all damage and damage reduction. All received contact damage is halved from enemies; this effect has a 20 second cooldown.

Trivia

 * Its name may be a reference to the memetic phrase "Blood for the Blood God", from the Warhammer 40,000 game series.
 * It can be considered the counterpart to The Amalgam.