Essense Flux

You shoot an orb of energy that marks the first enemy hit. The mark lasts for the duration. Your next attack or spell that hits the marked target deals an additional 1d8 force damage and restores the expended spell slot used to cast this spell.

At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, the extra damage increases by 1d8 for each slot level above 1st.