Enhanced Wraithform

The caster becomes partly incorporeal and takes on a wraith-like form. During this time, the caster is resistant to bludgeoning, piercing, and slashing damage from nonmagical weapons unless the weapon is coated in silver. The caster also gains resistance to all spells. Should the caster be the target of an attack, as a reaction, the caster can become wholly incorporeal to gain immunity from that attack.

The caster can use an action to become wholly incorporeal, until the end of their turn, so that they can move through solid objects as if they were difficult terrain. This movement also ignores all opportunity attacks. If the caster ends their turn within a solid object, the caster is ejected back in the direction from which they arrived to the closest open and unoccupied space and taking 3d4 force damage. 

Finally, while in enhanced wraithform, the caster's cannot make any weapon attacks or cast any spells that require a verbal, aromantic, or material components, and their unarmed attacks alters to now deal 5d4 force damage on a successful hit.