Amulet of Undertaker

This Amulet necromancers usually craft to create more minions. Every piece is different but they have something in common, there is symbol of skull on it.

How to obtain this item: It can be crafted from any material that can hold enchantment and you have to have symbol of skull on it. Next step is to sacrifice living soul with these words on your lips: Anáil nathrach, ortha bháis is beatha, do chéal déanaimh

Ritual consumes these ritual components: diamond dust (150g), blood of your sacrifice, roaster claw, viper tong and symbol of your true pain.

While you are attunement to this amulet you can control 4 undead creatures without need of maintain control over them. If you control no undead creatures you also can cast Animate Dead spell once. Once you cast it, you must finish a long rest before you can cast it again using this amulet.

If you are also attunement to Dead Man's Boots and Vampire's Cowl you gain additional effects:

You no longer need to maintain control over any undead creature you control

Notes: caster who know Animate Dead spell, Summoning, Buff, Necklace, Jewelry