Amulet of Familiar Binding

This platinum necklace bears a blue crystal that is covered in runes that bind it to the wearers magic. If you wear this necklace while defeating the following creatures types, you gain access to the corresponding familiars when you cast the Find Familiar spell:

• imp if you slay a devil of CR 5 or higher.
• pseudodragon if you slay a dragon of CR 5 or higher.
• quasit if you slay a demon of CR 5 or higher.
• sprite if you slay a fey of CR 3 or higher.
• gazer familiar if you slay a aberration of CR 10 or higher.

Additionally, when you take the attack action, you can forgo one of your own attacks to allow your familiar to make one attack of its own with its reaction. If you end your attunement with this item, any familiar created using this item disappears.

Notes: Spellcaster who knows the Find Familiar spell