Phase Walker

You gain the following features.

1. Incorporeal Movement ability. 
2. When you are targeted by an attack, you can use your reaction to impose disadvantage on the attack. You can use this feature twice per long rest.

*Taking this feat a second time grants the Ethereal Jaunt ability and 2 more uses of the disadvantage feature. 

*Taking this Feat a third time grants the Ethereal Stride Ability and 2 more uses of disadvantage feature. 

(With DM’s discretion, this feat could also be based on Character Level instead of taking multiple times.)

Incorporeal Movement: You can move through other creatures and Objects as if they were difficult terrain. You takes 5 (1d10) force damage if you end your turn inside an object.

Ethereal Jaunt. As a bonus action, you can magically shift from the Material Plane to the Ethereal Plane or vice versa. 

Ethereal Stride. You and up to three creatures within 5 feet of you magically enter the Ethereal Plane from the Material Plane, or vice versa.