Never start a knife fight with a surgeon.
(Self): Attack Power +10/+20, Attack Cooldown -0.3
Heroes with skill: Opbot DV8 (lvl 3/10)
A powerful combat skill that can significantly boost the hero's DPS when the going gets tough. The significant reduction in Attack Cooldown allows the hero to truly make use of their Attack Power. Of course, the fact that this skill is not possessed by combat oriented heroes, does mean that it will not create a veritable killing machine.