Dark Spikes T

You call upon dark, otherworldly forces to conjure a field of black spiraling spikes that tear through your foes. Choose a creature within range, and the target must make a Dexterity Saving Throw. On a failed save the creature takes (6d8) necrotic damage, or half as much on a successful save.

If the target is a mounted creature or a creature of the Beast type, it has disadvantage on the saving throw.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by (1d8) for each spell slot above 4th.