Eldritch Whirlwind Master

With a blade’s sweep you pull and spin the arcane power, surrounding yourself in a cyclone of arcane energy as your spell's power tries to match the speed of your sword.

Whenever you use your reaction to cast a spell through a melee weapon attack using bladechanting , you may choose up to a number of additional targets for that spell equal to the spell level of the spell slot used to cast it. These additional targets must all be within 10 feet of you and are each treated as if they were the spell’s original target.