Critical Master

You learn to make the best of critical situations and sway the tides in your favor even if they're against you.

• When you land a critical hit against a creature within range, you may immediately use your reaction to make a single weapon or unarmed attack against the creature you hit.
• When a creature within the range of your melee weapon lands a critical against you, you may immediately use your reaction to make a single weapon or unarmed attack against the creature that hit you.
• An attack granted by one of the above reactions scores a critical hit on a roll of 19 or 20.