Magical quiver. Yi’s quiver of arrows is magical. Yi’s quiver never runs out of magical arrows. Here are some of the magical arrows in his quiver. 

• Magnetic arrow- Any creature within 10 ft of the arrow has to make a DC 22 dexterity saving throw or their weapon sticks to the arrow. 
• Lightning arrow- This arrow deals an extra (10d6) lightning damage.
• Bomb arrow- Any creature within 30 ft of the arrow has to make a DC 22 dexterity saving throw or take (8d6) fire damage
• Volley- One arrow splits in to many arrows. Anyone in a 30 ft radius has to make a DC 22 dexterity saving throw or take (16d6) piercing damage. This takes away normal arrow damage.
• Gas arrow- When used activates incendiary cloud spell. 
• Charm arrow- Target must make a DC 22 wisdom saving throw or be charmed for a minute. Creature can make saves at the end of their turns. 
• Wall arrow- When arrow is targeted at the ground a wall of light appears.
• Cage arrow(recharge 6)- When someone is targeted by this arrow the forcecage spell goes off.

Expert archer- Yi is a expert with the bow and gains these benefits.

• Yi has the sharpshooter feat.
• Yi does not suffer disadvantage when within 5 ft of someone. 
• Yi can make opportunity attacks with his bow. It has a reach of 10 ft. 

Evasion. If Yi is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, Yi instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.

Sneak Attack. Once per turn, Yi deals an extra 24 (8d6) damage when it hits a target with a weapon attack and has advantage on the attack roll, or when the target is within 5 feet of an ally of Yu that isn't incapacitated and Yi doesn't have disadvantage on the attack roll.

Multiattack. Yi makes 4 composite bow attacks..

+ 3 Composite bow. Ranged Weapon Attack: +17 to hit, range 180/600ft., one target. Hit: 17(1d12 + 10) piercing damage Plus 9 (2d8) force damage. 

Bow parry- Yi can parry with his bow, he adds 4 to his AC.