Crimson Spires

You draw upon spilled blood or offer your own as sacrifice, shaping it into hardened crimson spikes that erupt from the ground. Each creature within a 10-foot radius of a point you choose must make a Dexterity saving throw. On a failed save, a creature takes 2d8 piercing damage and 1d6 necrotic damage, or half as much damage on a successful save.

If no blood is present, you may use your own blood as the source, taking 1d4 necrotic damage as part of the casting.

At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, the piercing damage increases by 1d8 for each slot level above 1st.