Nystul's Blacklight Burst

This risky spell brings forth a blast of energy from the Negative Material Plane for an instant. Those within the area of effect suffer 1d4 points of damage per level of the caster, half damage if a save vs. death magic is successful. The maximum potential damage is 10d4. Those who fail their saves are also slowed (as the spell) for 1d4 rounds. Undead are not affected by the spell.

Creatures from the Positive Material Plane or upper Outer Planes take an additional point of damage per level of the caster, and their saving throws are made at a -2 penalty. Such creatures failing their saves are stunned for 1d4 rounds, rather than slowed.

The wizard is 10% likely to lose control of the spell and be affected by its attack, as a ray from the area of effect bounces back to strike the caster.

The material component is a bit of earth taken from the grave of a ghoul or ghast. Blackmote