You have absorbed a Fragment of Suffering-- a tangible representation of an emotion felt by the Apotheon.

Benefit. When a creature damages you with a weapon attack or a spell, you can focus your hatred on that creature. Until the end of your next turn, you have advantage on attack rolls you make against the creature. You can focus your hatred on only one creature at a time.

Drawback. You have disadvantage on Charisma checks.

You can use an action to transfer this fragment to another creature by touching the fragment’s intended recipient. When a fragment leaves a creature, that creature loses the benefit and drawback conferred by the fragment.