Amorphous Form

"You know, I've heard of Rogues picking locks before, but I'd never thought I'd see them squeeze through them."

You transform a willing creature, medium or smaller, into a translucent jelly for the duration. The spell ends if the creature drops to zero hit points. An incorporeal creature is not affected.

While in this form, the creature's skin becomes translucent, and their body becomes as soft as jelly. The creature can pass through spaces as small as 1 inch without squeezing and their speed is set to 10 feet. While passing through spaces the creature normally could not fit through, they cannot take actions or bonus actions. The creature also gains vulnerabilities to slashing, piercing, and bludgeoning damage.

If a creature is not in open space when the spell ends, they are pushed to the nearest opening, taking 1d6 bludgeoning damage.