Amulet of Exclusion

While wearing this amulet, you can use an action to choose one of the following effects:

• Name a spell. Then, make a DC 15 Intelligence check. On a successful check, you exclude the spell, causing anyone who casts it (apart from the amulet's wielder) to instantly die. 
• Name an object. Then, make a DC 20 Intelligence check. On a successful check, you exclude the object, causing anyone who uses an object of that type (apart from the amulet's wielder) to instantly die. 
• Make a DC 25 Intelligence check. Exclude a living creature, killing it instantly. While this exclusion is active, this creature cannot be revived through magical means, including wish.
• Name an action. Then, make a DC 30 Intelligence check. On a successful check, you exclude the action, causing anyone who acts on it (apart from the amulet's wielder) to instantly die.
• Cancel one existing exclusion.

The owner of the amulet can use any excluded spells without expending a spell slot. Creatures that die from exclusion can only be revived through a true resurrection or wish spell. An exclusion can only be canceled by a wish spell or the amulet's own effect. Once used, this amulet can only be used again after 1 hour.

Notes: Advantage: Ability Checks, creature of at least level 15, Exploration, Jewelry