These relics are the most potent of magic items -- capable of altering the balance of a campaign -- and only one of each such item exists. An artifact therefore has no rarity, and the ability to craft an artifact is the exclusive purview of deities and demigods. Moreover, an artifact is not easily destroyed; each one has only a single means of destruction.

An artifact could be the center of a whole set of adventures; a quest to recover it, a fight against a opponent wielding it, a mission to cause its destruction, and so on. Here are three examples:

Cloak of Invisibility (Artifact): While you wear this cloak with the hood up, you are invisible. Anything you are wearing or carrying is also invisible as long as it is on your person.

  • Unwoven: The Cloak of Invisibility can be unmade by the diaphanous silver spiders who weave between the stars.\ Dragonslayer (Attunement) (Artifact): This adamantine greatsword has the following properties when you hold it:

  • Accuracy: When you make a Fighting test with Dragonslayer, you can reroll one of the dice once (before the outcome is settled) and choose whether or not to use the new roll.

  • Dragonsbane: When Dragonslayer deals damage to a dragon, that damage is doubled. In addition, the dragon can't cast spells and has disadvantage on all tests until the end of your next turn.

  • Resistance: You have resistance against the damage of any spell cast by a dragon (see Resistance and Vulnerability). In addition, you have advantage on any test you make against a spell cast by a dragon.

  • Final Rest: When all dragons are finally extinct, Dragonslayer disappears forever.\ Staff of the Magi (Attunement) (Artifact): To attune to this golden staff, you must know at least two spells. The staff has the following properties when you hold it:

  • Puissance: When you spend a spirit point (or a mana point, see Font of Magic (2 SP)) to heighten a spell, reuse an expended power, or stack the odds on the [Fighting] test of a blast attack you make as a part of a spell, you can reduce the number of spirit points (or mana points) you spend by 1.

    You can use Puissance seven times. The staff regains expended uses when it is exposed to dawn's first light.

  • Retributive Strike: You can use an action to break the staff over your knee or against a solid surface, performing a retributive strike. The staff is destroyed and releases its magic in an explosion that expands to fill a 13-square cube centered on its square. When this happens, the GM rolls any die. If the result is even, you instantly travel to random plane of existence, avoiding the explosion. If the result is odd, you take 16D8 eldritch damage. In either case, every other creature in the area takes 12D8 eldritch damage.