Surging Smite

The next time you hit a creature with a melee weapon attack during this spell’s duration,the weapon crackles with stormy magic. The attack deals an extra 2d6 lightning
damage to the target. You can then designate up to three other creatures within 15 foot of the target, who must make Dexterity saving throws as lightning arcs
from the initial target to them. On a failed save each additional target takes 1d6 lightning damage, or half on a success