With incredible swiftness you tear your weapon from its sheath and let fly a reckless attack.

With awe-inspiring skill you unleash a thrown weapon or arrow, knocking a missile out of the air.

When you see a missile from a ranged weapon attack enter into the normal range of a weapon you are wielding, you can use your reaction to deflect it. Use a weapon to make a ranged attack against an AC equal to the attack roll of the missile. On a hit, the missile is deflected and misses its target. 

At the Narrator’s discretion, certain ranged weapon attacks (like a giant’s thrown rock) may be too heavy to be deflected by Countershot.

Badly wounded, you force yourself to keep fighting.

When you are reduced to 0 hit points, you can use your reaction to regain hit points equal to 1d12 + your proficiency bonus + your Constitution modifier (minimum 0). 

You wield your weapon with abandon, striking seemingly at random.

When you miss with an attack using a weapon that has the heavy property, you can use your reaction to make an attack with the same weapon against another target within your reach.

You power through your enemy’s special attacks.

At the edge of death, you cling firmly to life.

A powerful blow smashes a weapon from your enemy’s grasp.

Girding yourself when your body is assaulted by more than clenched fists or sharp steel, you defy weakness and overcome.

Putting yourself in just the right position as you strike, your unbalancing hit sends a retreating opponent into a reeling stumble and then the ground.

After you slam your weapon into an opponent you work the momentum of the blow into another strike at a second enemy nearby in a devastating display of might.

When you hit with a melee weapon attack using a weapon with the heavy property, you can use your reaction to make an additional melee weapon attack against a second creature that is also within your reach.