Formation Mastery

You've mastered fighting with a partner, learning to move and act as a single unit. You gain the following benefits:

• When you take the Guard action, the guarded ally has advantage on Dexterity saving throws that would affect only them while guarded.
• When a creature misses an ally within 5 feet of you with a weapon attack, you can use your reaction to make a weapon attack against that creature without your proficiency bonus.
• When a creature hits an ally within 5 feet of you with a weapon attack, you can use your reaction to impose a penalty to the attack roll equal to your proficiency bonus, potentially causing the attack to miss.