Amulet of The Mothers' Wrath

This pendant contains a small jewel with ornate tentacles clinging to its sides.

While wearing the pendant, you can cast Armor of Agathys and Hex from it without expending a spell slot, causing the jewel to grow radiantly and the tentacles to undulate.

Once you cast either spell in this way, you cannot cast that spell this way again until you finish a long rest. You can cast either spell using any other spell slots you have.