Skull of Scopum

Also known as the Relic of Rem. The artifact has a long and curious past, and more names than Hello From the Magic Tavern's Usidore the Blue. 
Currently possessed by Cade Ghostbane. 
Wondrous Item, artifact (Requires attunement by a magic user).
An unusual item with a mysterious past and even more mysterious curse.
This item grants the wielder the ability to traverse the planes in the blink of an eye; the wielder may spend an action to teleport up to 60ft in any one direction. Only the wielder may teleport, no passengers. No other person can use the item while it is attuned. If the wielder teleports into a wall, or otherwise occupied space, they instead land in the nearest unoccupied space and take nd6 damage, where n is the character's level.
The item also exudes an aura of bad luck. The wielder may use the skull to provide advantage to a roll of their choosing (3 per long rest). On a successful roll, the DM may provide a non-too-serious complicating event ("yes, but..."), whilst on a failure a horrendously unlucky event occurs for the wielder. Any event must be directly tied to the attempted roll (i.e. lockpick breaks while trying to pick a lock; no random tarrasques. Well, not just yet.)
Notes: Requires attunement by a magic user
Adventures: 
An Existential Crisis
The Sting
A Pirate's Life
Category:Artifacts