Artful Larceny

Once per turn, you can attempt to steal one item (non-wielding weapon, non-armor equipment, or currency) from an enemy within 10 ft. Make a Sleight of Hand (Dex) Check against enemy's Passive Perception Check. If Successful, you get one item based on available items. If failed, enemy deals reaction attack damage to you, per character level scale below.

Level 1 = 1 item, or enemy does 1d8+4 bludgeoning
Level 5 = 1 item, or enemy does 2d8+4 bludgeoning
Level 10 = 2 items, or enemy does 3d8+4 bludgeoning
Level 15 = 2 items, or enemy does 4d8+4 bludgeoning
Level 20 = 2 items, or enemy does 5d8+4 bludgeoning