Void Geyser

5th-level necromancy

Casting Time: 1 action

Range: 120 feet

Components: V, S

Duration: 2 rounds

You rupture the membrane between dimensions at a point within range that you can see, allowing terrible energies to rush forth from the void. Creatures within 5 feet of the geyser must make a Dexterity saving throw, taking 9d6 necrotic damage on a failed save, or half as much on a successful one.

At the start of your next turn, the geyser widens, causing all creatures within 30 feet of it to make the same Dexterity save, after which the tear between realities closes.

Undead in the area of effect are immune to the necrotic damage. Instead, they are healed for an equal amount of hit points, though they cannot exceed their maximum hit points.

At Higher Levels. When you cast this spell using a spell slot of 6th or higher, the damage increases by 2d6 for each slot level above 5th.