Shadow Spikes

You create a barrier of shadow spikes as sharp as blades; creatures in a 30-foot line from you must make a Dexterity saving throw. On a failure, an affected creature takes 8d6 shadow damage and falls Prone. On a success, it takes only half the damage.

At Higher Levels. When you cast this spell by spending Mana points equal to a 4th-level spell or higher, the damage increases by 1d6 for each spell level above 3rd.