You breathe thunder and move like lightning, a storm rushing through your veins as electricity arcs off of your body and weapons while pushing your body to its limits.

Your movement speed increases by 10 ft. Whenever a creature moves within 5ft of you or starts their turn adjacent to you, they take 1d4 lightning damage. Whenever you hit with a melee weapon your attack deals an additional 1d8 lightning damage. 

Additionally, whenever an enemy hits you with an attack, you can use a reaction to cause that attack to miss. You may then move 5 feet without provoking an opportunity attack. Though this feature can only be used once per casting of Storm-blood

At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, your speed increases by 10 ft., the damage to adjacent creatures increases by 1d4 and the extra damage when you hit with a melee attack increases by 1d8 for each slot level above 4th.