Amorphous Form

You touch a willing creature, and a they become a puddle-like mass with a fluidity that resembles an ooze for the duration of the spell. This new fluid body allows for the target to enter narrow spaces as small as 2 inches (5 centimeters) in width, as well as breath and move normally underwater.

While in this form, the target is immune to the following: poison damage, the flanked, poisoned, and stunned conditions, and form-changing magic (like the polymorph spell, or shapechanging features like wild shape).