Monster Tamer's Shield

Wielding a shield increases your Armor Class by 2. You can benefit from only one shield at a time. This shield punishes certain creatures for their hostility and comes from a culture whose dominion is in direct competition with powerful beasts. While holding this shield, whenever you take damage from a melee attack made by a beast or monstrosity, that creature takes 1d4 psychic damage. In addition, you have advantage on Wisdom (Animal Handling) checks.

Tamer's Protection: If you are also attuned to the monster tamer's sword and are holding this shield, any creature captured by the sword gains a +1 bonus to its AC and can't be charmed.