True Polymorph

9th-Level Transmutation Spell (Bard, Warlock, Wizard)

Casting Time: Action
Range: 30 feet
Components: V, S, M (a drop of mercury, a dollop of gum arabic, and a wisp of smoke)
Duration: Concentration, up to 1 hour

Choose one creature or nonmagical object that you can see within range. The creature shape-shifts into a different creature or a nonmagical object, or the object shape-shifts into a creature (the object must be neither worn nor carried). The transformation lasts for the duration or until the target dies or is destroyed, but if you maintain

Some spells and other effects require Concentration to remain active, as specified in their descriptions. If the effect's creator loses Concentration, the effect ends. If the effect has a maximum duration, the effect's description specifies how long the creator can concentrate on it: up to 1 minute, 1 hour, or some other duration. The creator can end Concentration at any time (no action required). The following factors break Concentration.

Another Concentration Effect. You lose Concentration on an effect the moment you start casting a spell that requires Concentration or activate another effect that requires Concentration.

Damage. If you take damage, you must succeed on a Constitution saving throw to maintain Concentration. The DC equals 10 or half the damage taken (round down), whichever number is higher, up to a maximum DC of 30.

Incapacitated or Dead. Your Concentration ends if you have the Incapacitated condition or you die.

on this spell for the full duration, the spell lasts until dispelled.

An unwilling creature can make a Wisdom saving throw, and if it succeeds, it isn't affected by this spell.

Creature into Creature. If you turn a creature into another kind of creature, the new form can be any kind you choose that has a

Challenge Rating (CR) summarizes the threat a monster poses to a group of four player characters. Compare a monster's CR to the characters' level. If the CR is higher, the monster is likely a danger. If the CR is lower, the monster likely poses little threat. But circumstances and the number of player characters can significantly alter how threatening a monster is in actual play. The Dungeon Master's Guide provides guidance to the DM on using CR while planning potential combat encounters. See also Stat Block.

equal to or less than the target's

Challenge Rating (CR) summarizes the threat a monster poses to a group of four player characters. Compare a monster's CR to the characters' level. If the CR is higher, the monster is likely a danger. If the CR is lower, the monster likely poses little threat. But circumstances and the number of player characters can significantly alter how threatening a monster is in actual play. The Dungeon Master's Guide provides guidance to the DM on using CR while planning potential combat encounters. See also Stat Block.

or level. The target's game statistics are replaced by the stat block of the new form, but it retains its

Hit Points (HP) are a measure of how difficult it is to kill or destroy a creature or an object. Damage reduces Hit Points, and healing restores them. You can't have more Hit Points than your Hit Point maximum, and you can't have less than 0. See also Breaking Objects and Damage and Healing.

,

Hit Point Dice, or Hit Dice for short, help determine a player character's Hit Point maximum, as explained in Creating a Character. Most monsters also have Hit Dice. A creature can spend Hit Dice during a Short Rest to regain Hit Points. See also Short Rest.

, alignment, and personality.

The target gains a number of

Temporary Hit Points are granted by certain effects and act as a buffer against losing real Hit Points. See also Damage and Healing.

equal to the

Hit Points (HP) are a measure of how difficult it is to kill or destroy a creature or an object. Damage reduces Hit Points, and healing restores them. You can't have more Hit Points than your Hit Point maximum, and you can't have less than 0. See also Breaking Objects and Damage and Healing.

of the new form. These

Temporary Hit Points are granted by certain effects and act as a buffer against losing real Hit Points. See also Damage and Healing.

vanish if any remain when the spell ends.

The target is limited in the actions it can perform by the anatomy of its new form, and it can't speak or cast spells.

The target's gear melds into the new form. The creature can't use or otherwise benefit from any of that equipment.

Object into Creature. You can turn an object into any kind of creature, as long as the creature's size is no larger than the object's size and the creature has a

Challenge Rating (CR) summarizes the threat a monster poses to a group of four player characters. Compare a monster's CR to the characters' level. If the CR is higher, the monster is likely a danger. If the CR is lower, the monster likely poses little threat. But circumstances and the number of player characters can significantly alter how threatening a monster is in actual play. The Dungeon Master's Guide provides guidance to the DM on using CR while planning potential combat encounters. See also Stat Block.

of 9 or lower. The creature is

A Friendly creature views you favorably. You have Advantage on an ability check to influence a Friendly creature. See also Influence.

to you and your allies. In combat, it takes its turns immediately after yours, and it obeys your commands.

If the spell lasts more than an hour, you no longer control the creature. It might remain

A Friendly creature views you favorably. You have Advantage on an ability check to influence a Friendly creature. See also Influence.

to you, depending on how you have treated it.

Creature into Object. If you turn a creature into an object, it transforms along with whatever it is wearing and carrying into that form, as long as the object's size is no larger than the creature's size. The creature's statistics become those of the object, and the creature has no memory of time spent in this form after the spell ends and it returns to normal.

Source: Player's Handbook, p. 335