Null, my Sorlockadin is currently 17th level, and they can make 4 attacks a round at base when hasted and using booming blade. Each of their attacks do 2d6+2d10+4d6 fire+12+16d8 smite times 2 because of crits, and max damage because of coup de grace against a prone opponent held w/ hold monster, and that times 12 comes out to roughly 4,704 points of damage, and that's further doubled if the elder one in question counts as evil-aligned, being nearly 10,000 points of damage. Admittedly, that damage is entirely dependent on the Elder One in question failing a WIS save to get hit by Hold Monster.