Sweeping Strikes

It is not uncommon to face seemingly unending hordes of opponents, often much weaker than yourself. A greatsword might cleave through a swathe of kobolds, or the sweep of a warhammer could shatter a group of skeletons. We will be using this optional rule from DMG pg. 272 with a few modifications.

"When a melee attack reduces an undamaged creature to 0 hit points, any excess damage from that attack might carry over to another creature nearby. The attacker targets another creature within reach and, if the original attack roll can hit it, applies any remaining damage to it. If that creature was undamaged and is likewise reduced to 0 hit points, repeat this process, carrying over the remaining damage until there are no valid targets, or until the damage carried over fails to reduce an undamaged creature to 0 hit points."

The number of extra creatures you can target is equal to your strength modifier.