Combo Master

Your ability to focus your attacks on one foe has given the last hit of your combos some extra punch. When you hit a creature with 2 or more melee attacks back to back on your turn, the last hit of that string deals 1d4 extra damage to the target and every chosen creature within 5 ft of it. This extra damage increases by 1d4 for every consecutive hit that continues the string after the Second, to a maximum of 4d4 in total.