You’ve trained extensively with your reflexes and are much better at reacting. You gain the following benefits:

• Whenever an attack is made by or against a creature within 5 feet of you and the attack is not being made against you, you can use your reaction to roll a d4 and subtract the number rolled + your Dexterity modifier from the attack roll. Once you do this a number of times equal to your proficiency bonus, you can’t do it again until you finish a long rest.
• Once per round, you can catch an object thrown to (not at) you from up to 30 feet away (no action required by you).
• Whenever you end your movement in midair and there is a ledge or similar object not being worn or wielded by a creature that might be used to stop your fall within reach, you can use your reaction to make a DC 15 Dexterity saving throw, stopping your fall by holding on to the object on a success.