Eldritch Detonation

You charge up a powerful explosion of crackling energy, starting by bolstering yourself to deliver the blast without recoil as well as aiming the blast. You gain 10 temporary hit points and resistance to all damage but are considered restrained until the the end of your next turn. This condition cannot be ignored or removed except due to an effect of a spell that is cast at 7th level or higher.

As part of casting the spell, you choose the direction of the area of effect of this spell. The air in the 60 foot cone in the direction you aim vibrates with an unsettling, magical hum; any creature in the cone that is not within the reach of an enemy it's engaged in combat with can sense this and understand that the area might not be safe.

Immediately at the start of your next turn, you use your bonus action to discharge the stockpiled energy from your body into the 60 foot cone you choose as part of the casting of this spell. All creatures and structures in the cone take 10d10+30 force damage.