Become Lightning

In order to cast this spell, there must be an opening to the sky of 10ft by 10ft. 

The Caster's body becomes a bolt of lightning and launches into the sky. 6 seconds later they can appear anywhere with a 10ft by 10ft opening to the sky within 10 miles. If the Caster drops into an occupied space, a creature must make a Dex Saving Throw against the Caster's spellcasting DC. They take 7d10 Lightning damage or half as much on a successful save. Buildings and structures take double damage. 

If a creature is grappling the Caster they must make a Dex Saving Throw against the Caster's spellcasting DC. On a success, they take no damage and are brought with the target. On a failure, they take 8d10 Lightning damage.