Amulet of Teleportation

This amulet made of titanium allows the user to step between worlds, constantly bending space and reality. The attuned wielder gains the following:

• You can cast the spell Misty Step at will
• You can cast the spell Dimension Door once per dawn

Cursed. The attuned wielder is cursed and cannot willingly take off the amulet nor give it to another creature. Additionally, every time you cast the Dimension Door spell using this item, roll a d100 to determine what happens.

01-10: You teleport to the Ethereal/Material plane. Whichever you are not currently on.
11-20: You teleport 1d4 x 100 feet in a random cardinal direction, following all other rules of the spell
21-30: You teleport 1d4 x 100 feet in a direction of your choice, following all other rules of the spell
31-100: You cast the spell normally