Warrior: Striking a higher level enemy applies a stack of Coup, increasing their damage taken from your next Execute by 10% per stack, stacking up to 20 times. At 20 stacks, Execute may be cast regardless of the target's health. Rogue: Striking a higher level enemy applies a stack of Coup, increasing their damage taken from your next Envenom by 5% per stack, stacking up to 20 times. Hunter: Striking a higher level enemy applies a stack of Coup, increasing their damage taken from your next Kill Shot by 5% per stack, stacking up to 20 times. Other classes: The blade does not respond to your presence.