You nearly lose

All your training culminates in this lethal attack. You deliver the perfect killing blow with a single secret technique.

You tune your senses, focusing on the fight at hand.

By relying on your training and countless hours of repetition, you can easily manipulate the battlefield to position yourself where your strikes are able to inflict the most harm.

Your weapon attacks score a critical hit on a roll of 18–20. If you already have a feature that increases the range of your critical hits, your critical hit range increases by 1 (maximum 17–20).

You feed off the adrenaline from a solid strike and turn that energy into frenetic movement.

Move up to your Speed and make a melee weapon attack against a creature. On a hit, for the next minute your Speed is increased by 10 feet.

Focusing your thoughts inward allows you to rise above the pain of wounds inflicted upon your body.

Until the start of your next turn, reduce any damage you take by 2.

Utilizing reflexes perfected by dedicated training, your body flows into a sublime strike almost without a thought.

When your exertion pool is not empty, you can use your reaction to make a melee weapon attack.

You move inexorably forward with an attack which cannot be stopped by blade or shield, forcing your opponent back.

Make a melee weapon attack against a creature. Whether or not you hit, the creature is pushed back 10 feet.

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.