You've learned to leverage the deadly potential of well-placed strikes; you gain the following benefits:

• Once on your turn, when you score a critical hit with a melee weapon or reduce a creature to 0 hit points with one, you can move up to half your speed without provoking attacks of opportunity.
• Before you make a melee attack with a light or finesse weapon that you are proficient with, you can choose to take a -5 penalty to the attack roll. If the attack hits, you add +10 to the attack's damage.