Repulsion Shield

Source: Tasha's Cauldron of Everything p. 23

Prerequisite: Level 6, A shield (requires attunement)

A creature gains a +1 bonus to Armor Class while wielding this shield.

The shield has 4 charges. While holding it, the wielder can use a reaction immediately after being hit by a melee attack to expend 1 of the shield's charges and push the attacker up to 15 feet away. The shield regains 1d4 expended charges daily at dawn.