Amulet of Soul Siphoning

The amulet has a spesial necrotic power, that draws enemy souls into it. When you drop an enemy, which is not undead or mechanical, it must succeed on a DC 14 Wisdom saving throw, or their soul will be trapped within the amulet. There can only be as many souls in the amulet as your wisdom modifier. Once the soul is inside the wearer will choose What happens:

  -  You gain +1 to any ability score while the amulet is worn. (To a maximum of 20, Does not stack)

  - You gain 1d8 plus your wisdom modifier hit points while the amulet is worn.

  - You can expend one soul to gain advantage to a saving throw, attack roll or ability check.

Notes: Bonus: Choose Strength, Dexterity, Constitution, Wisdom, or Charisma, Necklace