If your last DAMAGE roll deals more damage than the target's remaining hp, your attack spills over and hits another creature within 5 ft of that creature IF the same ATTACK roll equals or exceeds the new target's ac.
If your last DAMAGE roll deals more damage than the target's remaining hp, your attack spills over and hits another creature within 5 ft of that creature IF the same ATTACK roll equals or exceeds the new target's ac.