Nirto's Shift

You shape-shift into a creature of your choice until the spell ends. The form you choose needs to be of a creature that has a maximum CR of half your level or CR (rounded up). You need to have seen the creature before, and it cannot be a Humanoid, a Construct or an Undead.

When you cast the spell, you gain Temporary Hit Points equal to the maximum Hit Points of the new form you chose. You lose these Temporary HP if any are left when the spell ends. The spell ends early if you have no Temporary Hit Points left.

Your game statistics are replaced with the stat block of the chosen creature, but you keep your creature type, personality, alignment, Intelligence, Wisdom, and Charisma scores, your Hit Points, Hit Point Dice, proficiencies, and your ability to communicate.

When you cast this spell, you choose if your equipment drops to the ground or changes in size and shape to fit your new form while you’re shape-shifted.