Talisman of Mercy

Wondrous item, rare (requires attunement)

This small, platinum pendant is shaped like a heraldic lily and is embedded with tiny diamonds. While wearing this item, if you reduce a humanoid to 0 hit points and knock it out (rather than killing it), the creature must make a DC 15 Wisdom saving throw when it regains consciousness. If it fails the saving throw, it is charmed by you for 1 hour and regards you as a friendly acquaintance. When the effect ends, the creature is not automatically aware that it was charmed.