Seizing on the surge of adrenaline that comes from suffering a severe blow, you lash out with a vengeful strike.

When a creature makes a critical hit against you using a melee weapon attack, you can use your reaction to make a melee weapon attack against it.

After striking your foe, you twist the blade.

When you hit a creature with a melee weapon attack on a roll of 18 or 19, you can use your reaction to turn the attack into a critical hit.

With a series of low steps and somersaults you expertly maneuver around opponents.

Nothing within your sight is of minor significance and you take in your surroundings with great care even as arrows fly and blades clash upon shields.

Withdrawing into your mind, you focus and concentrate to steel your nerves.

Deftly surging forward and weaving around your opponent, when their attack fails you quickly move around your foe and force them to stumble.

The execution and follow through of your strike is exquisite with not an iota of force wasted.

When you activate this maneuver, you take the Attack action and make a weapon attack, as well as any additional attacks granted by Extra Attack. Until the start of your next turn, your weapon attacks score a critical hit on a roll of 19–20. 

If you already have a feature that increases the range of your critical hits, your critical hit range increases by 1 (maximum 17–20).