Amulet of Betrayal

This emerald amulet has been infused with the raw emotional energy of a long ago romantic betrayal. 

Once per day, you can use an action to turn any intelligent creature of CR 2 or lower against its allies for 3 rounds, if it fails a DC 15 Wisdom saving throw. At the beginning of each turn after the first, the creature can break the enchantment by making a DC 12 Wisdom saving throw. 

The amulet contains 3 charges, which are refilled when you experience a significant betrayal.