Santa Cortada's ring

While attuned to this ring, your attacks and
attacks against you have a 50% chance to miss.
You can also attempt to walk through walls. For
each 5 feet you pass through, there is a 50%
chance you get shunted to the nearest side and
take 1d6 damage for each 5 feet you pass through.
This ring makes you feel like you can be in multiple
places at once.