Deep Magic Volume 2 (p.187)
Heaven's Spear
7-level Evocation
Casting Time: 1 action
Range/Area: 150ft.
Components: Verbal, Somatic, Material
Materials: a tiny replica spear fashioned out of solid gold worth at least 250 gp
Duration: Instant
Attack/Save: Ranged Spell Attack
Damage/Effect: Piercing, Radiant
You hurl a spear of radiant light toward a creature you can see within range. Make a ranged spell attack against the target. On a hit, the target takes 4d8 piercing damage. When the spear reaches the target, regardless if it hits, it explodes in a wave of holy light. Each creature within 30 feet of the target, including the target, must make a Dexterity saving throw, taking 10d6 radiant damage on a failed save, or half as much damage on a successful one. Undead and creatures with the Sunlight Sensitivity trait have disadvantage on the saving throw.
At higher levels: When you cast this spell using a spell slot of 8th level or higher, the radiant damage increases by 1d6 for each slot level above 7th.
Available for: Cleric