Pact of the Tombstone

Your soul is put into an object of your choice: meanwhile, your body becomes pale, is cold to the touch, and you lose your ability to taste things. The object is put into a place of your patron's choice and is protected by a method of the GM's choosing. While protected in this way, if you die, your soul returns to your body, and the revivify spell is cast on you instantly. If you are in a condition beyond the spell's effects, such as if you are beheaded, your soul simply belongs to your patron now, but it can be resurrected through other means.

You carry another enchanted object related to the original object that carries your soul–for example, a tiny key to open a locket that carries your soul. This tiny object can be used as a spellcasting focus for your warlock spells.

While holding it, you can cast a necromancy spell without expending a spell slot or one of your Mystic Arcanum uses. You can do so twice per short rest.