Thundercrash

Thundercrash

5th-Level Evocation

Casting Time: 1 Action
Range: Self
Components: V, S
Duration: Until the start of your next turn

You become a living bolt of lightning, gaining 10 Arc Charges (d6s) and a Fly Speed equal to twice your Speed. You can hover, your movement doesn’t provoke Opportunity Attacks, and you can move through creatures’ spaces. Until the spell ends, you can’t attack or cast another spell.

Arcing Flight. Each time you pass within 5 feet of a creature, you can spend 2 Arc Charges to force it to make a Dexterity saving throw. It takes 2d6 Lightning damage on a failure, or half as much on a success. You can affect as many creatures as your Arc Charges allow, but each creature can be affected only once per casting.

Full-Charge Crash. If you haven’t spent any Arc Charges, you can crash into a creature, surface, or space you can reach, ending the spell. Creatures within 15 feet of the impact make a Dexterity saving throw. On a failure, a creature takes 1d6 Lightning damage for each Arc Charge, falls Prone, has its Speed halved until the start of your next turn, and the next attack roll against it before then has Advantage. On a success, it takes half damage and suffers no other effects.

If you haven’t spent any Arc Charges when the spell would otherwise end, you Crash in your current space.

Using a Higher-Level Spell Slot. You gain 2 additional Arc Charges for each slot level above 5th.