Wrath of The Dracos

You call upon the ancient powers of your draconic ancestor, channeling your draconic lineage. You summon a large, spectral dragon head for the duration. The spectral head takes on the form most comparable to an ancient dragon of your respective lineage. The spectral head is made of concentrated energy and is not solid, allowing creatures and objects to pass through the spectral head.

When you cast this spell and summon the head on your turn, and as a bonus action on subsequent turns, the head attacks.

Draconic Entry. When you initially summon the head, the spectral form breathes out a 30-foot cone of energy. All creatures in the cone must make a Dexterity saving throw, taking 5d12 lightning damage and 5d12 thunder damage on a failed save or half as much on a successful one.

Concentrated Energy. As a bonus action on every subsequent turn, while you maintain concentration, you make have the spectral head make a bite-like attack against a creature within 10 feet of the head. That creature must make a Dexterity saving throw, taking 4d6 magical piercing and 4d6 lightning on a failed save or half as much on a successful one. Also, as part of this bonus action, you may move the spectral head up to 60 feet. The spectral head cannot move further than 120 feet from you.

Detonate. When you choose to end the spell, lose concentration on the spell, or the spell's duration has completed, the spectral head detonates as the energy dissipates into the surroundings. All creatures within 20 feet of the spectral head must make a Dexterity saving throw, taking 2d10 lightning damage and 2d10 thunder damage on a failed save and they are stunned until the end of their next turn. On a successful save, the creature takes half as much damage and is not stunned.