Celestial Convergence Amulet

This amulet is crafted from dark metal and inlaid with a shimmering gemstone that resembles a star. While wearing the Celestial Convergence Amulet, you gain a +1 bonus to spell attack rolls and the saving throw DCs of your spells. In addition, once per long rest, you can use a bonus action to invoke the power of the stars and gain advantage on your next spell attack roll. If you do so, you can also choose to deal an extra 1d4 radiant damage on a successful hit, as the energy of the stars courses through your spell. However, when you use this ability, you become aware of the overwhelming cosmic forces, and must succeed on a DC 12 Wisdom saving throw or be frightened until the end of your next turn.