Bolt of Grandsax

You manifest a titanic spear of condensed lightning and hurl it at a point you can see within range. The spear detonates in a violent thunderburst.

Each creature in a 40-foot-radius sphere centered on that point must make a Dexterity saving throw. A creature takes 10d10 lightning damage on a failed save, or half as much damage on a successful one.

Objects and structures in the area take double damage from this spell.