Liquidity

4th-level transmutation (druid, sorcerer, warlock, wizard)

Casting Time: 1 action

Range: Touch

Components: V, S, M (a sponge and liquid from a venom or water elemental)

Duration: Concentration, up to 1 hour

You transform a willing creature you touch, along with everything it’s wearing and carrying, into a fluid form for the duration. The spell ends if the creature drops to 0 hit points.

While the target is in this form, its walking speed becomes 10 feet, and it gains a swimming speed of 40 feet. The target can enter and occupy the space of another creature. The target has resistance to nonmagical damage. The target can pass through small holes, narrow openings, and even mere cracks. The target can breathe water and air. The target’s reach with melee weapon attacks increases by 5 feet.

While in fluid form, the target can only communicate in Aquan. It can manipulate objects, but any objects it was carrying or holding when the spell was cast can’t be dropped, used, or otherwise interacted with. The target can’t cast spells, and it has disadvantage with all weapon attacks except unarmed strikes. The target’s unarmed strikes deal bludgeoning damage equal to 1 + its Strength modifier, regardless of any other abilities that modify this damage.