Amulet of the Frost Maiden's Bane

 

The amulet has 6 charges and regains 1d6 charges daily at dawn. While wearing the amulet, you can use an action to expend 1 of its charges to transport yourself and anything you are wearing or carrying to a location within 100 feet of you. The destination you choose doesn't need to be in your line of sight, but it must be familiar to you (in other words, a place you have seen or visited), and it must be on the same plane of existence as you. if you aren't undead, you must make a DC 16 Constitution saving throw each time you use the amulet to teleport. On a failed saving throw, a blast of icy energy erupts from the amulet and you are transformed in transit. The transformation takes effect as soon as you arrive at the destination, and is determined randomly by rolling percentile dice and consulting the table

 

d100 Transformation

01-20 The symbol of Auril is burned into your flesh, a curse that can only be removed with a remove curse spell or similar magic. Until the curse ends, your hit points can't be restored by magic.

21-35 You grow larger as if affected by an enlarge/reduce spell, except the effect lasts for 1 hour.

36-50 You grow smaller as if affected by an enlarge/reduce spell, except the effect lasts for 1 hour.

51-70 You arrive at the destination wearing nothing but the amulet. Everything else that you were wearing or carrying appears in a random unoccupied space within 100 feet of you. 71-95 You are paralyzed for 1 minute or until this effect is ended with a lesser restoration spell or similar magic.

96-00 You become petrified. This effect can be ended only with a greater restoration spell or similar magic.