Ghost Chain Shirt

While wearing this armor, you can speak its command word as a bonus action to move incorporeally for 1 round. You can move through other creatures and objects as if they were difficult terrain. You take 5 (1d10) force damage if you end your turn inside an object. You can use this ability a number of rounds per day equal to your level.

Made of interlocking metal rings, a chain shirt is worn between layers of clothing or leather. This armor offers modest protection to the wearer's upper body and allows the sound of the rings rubbing against one another to be muffled by outer layers.