Coven Bolt

You create an magical bond with a willing creature within 30 ft. that manifests as blue lighting arcing rapidly between the two of you. Any creature directly between you and the bonded creature must make a dexterity saving throw, or take 1d12 lightning damage on a failed save, half as much on a successful one. This effect can only effect a specific creature once per turn, but can effect them multiple times per round. 

Both the caster, and the bonded creature must maintain concentration on this spell and stay within 30 ft or the bond will be broken.

If the creature you are bonded to can also cast Coven Bolt, they can choose to burn the same level spell slot the spell was cast at to double the number of damage dice.

When casting this spell at a higher level, it does an additional 1d12 lightning damage for each spell slot above 1st.