Bloodboon

You hurl burning blood in a 15ft cone in front of you. All creatures within the area must make a Dexterity saving throw. A creature takes 2d8 fire damage on a failed save, or half as much on a successful one.

Additionally, the blood pools at the edges of the cone, leaving traces of burning blood lying on the floor for 1 minute. A creature that tries to pass through the burning blood, or ends its turn there, takes 1d8 fire damage.

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