Aspect of Storm

You harness the full power of the storm, containing it within you. The fury of the storm is so strong that you take 1d10 lightning damage when you cast this spell, and an additional 1d10 lightning damage at the start of every turn for the duration, this damage cannot be reduced in any way. Until the spell ends, you gain the following benefits:

• You are immune to all lightning and thunder damage, except for the damage taken from this spell.
• Your movement speed is doubled, and you also gain the ability to fly at that same movement speed.
• All lightning or thunder damage, from sources other than this spell, that you do, deal additional damage equal to the spell level's base level x5. Cantrips, and non spell damage deal a bonus 5 damage.
• When you take damage, and the source is within 60 ft, the creature must make a dexterity save, or take 3d10 lightning damage, or half as much on a fail.

If you are put to 0 hp while this spell is active, you instantly release all the remaining contained power within you. Each creature within 20 ft of you must make a dexterity saving throw. On a fail, they take 1d6 lightning, and 1d6 thunder damage for every turn remaining in the duration of the spell, or half as much on a success, then the spell immediately ends.