Tepes Nail

You make a gesture with your nail towards a hanging source of wood to transform it. Select a space occupied by natural wood or a piece of land that resembles a tree. You warp the shape of the wood into that of a heavenly nail, consuming the space and causing it to crash down on a creature directly below it. Your target must make a Dexterity saving throw, taking 20 piercing damage on a failure and begin Bleeding (1d4). On a success taking half as much damage and suffering no additional effects. 

While Bleeding from this spell, the heavenly nail buries deep within the target for the next minute. The next time this creature consumes a resource (such as a spell slot), or replenishes hit points, the ability fails and no resource is consumed or hit points replenished. When this occurs, all creatures within 10-feet of the Bleeding creature (including the Bleeding creature) must make a Dexterity saving throw or take 1d4 piercing damage and an additional 1d4 piercing damage whenever it takes piercing damage for the next minute. If a creature recovers hit points while under this effect, it immediately ends.

At Higher Levels: The damage of the nails fall increases by 5 for each spell slot level above 2nd