The Pearls of Ygorl

Wondrous item (necklace), very rare (requires attunement)

These beads writhe, change colors, size, and texture at random.

Entropic Enhancement

When rolling damage for spells that use these pearls as a focus, roll a total additional bonus of 1d6 per spell level. This additional damage is necrotic.

Bondbreaker

Any creature charmed by you is extra susceptible to being turned against its allies