The Bound Soul

A soul is now forever bound to your service, to watch and protect you, the soul of an ancient Assassin. While you rest, you have feel a calming presence guard you and keep you safe, and you always wake perfectly rested. This soul, when you need her to, takes the shape of a Soul Trinket.

You will always have 1 Soul Trinket with you, The Bound Soul Trinket, this soul trinket is forever bound to you and can be used infinitely if you have no other soul trinkets. Depending on how many trinkets you posses you get stronger as the dead power your might:
1 Trinket: You have advantage on attack rolls
2 Trinkets: You have advantage on saving throws.
3 Trinkets: You have advantage on checks.
4 Trinkets: +3 to Attack Rolls.
5 Trinkets: +3 to Damage Rolls.
6 Trinkets: You have resistance to all damage.