Wish

9th-Level Conjuration Spell (Sorcerer, Wizard)

Casting Time: Action
Range: Self
Components: V
Duration: Instantaneous

Wish is the mightiest spell a mortal can cast. By simply speaking aloud, you can alter reality itself.

The basic use of this spell is to duplicate any other spell of level 8 or lower. If you use it this way, you don't need to meet any requirements to cast that spell, including costly components. The spell simply takes effect.

Alternatively, you can create one of the following effects of your choice:

• Object Creation. You create one object of up to 25,000 GP in value that isn't a magic item. The object can be no more than 300 feet in any dimension, and it appears in an unoccupied space that you can see on the ground.
• Instant Health. You allow yourself and up to twenty creatures that you can see to regain all

  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.

  , and you end all effects on them listed in the Greater Restoration spell.
• Resistance. You grant up to ten creatures that you can see

  If you have Resistance to a damage type, damage of that type is halved against you (round down). Resistance is applied only once to an instance of damage. See also Damage and Healing.

  to one damage type that you choose. This

  If you have Resistance to a damage type, damage of that type is halved against you (round down). Resistance is applied only once to an instance of damage. See also Damage and Healing.

  is permanent.
• Spell Immunity. You grant up to ten creatures you can see immunity to a single spell or other magical effect for 8 hours.
• Sudden Learning. You replace one of your feats with another feat for which you are eligible. You lose all the benefits of the old feat and gain the benefits of the new one. You can't replace a feat that is a prerequisite for any of your other feats or features.
• Roll Redo. You undo a single recent event by forcing a reroll of any die roll made within the last round (including your last turn). Reality reshapes itself to accommodate the new result. For example, a Wish spell could undo an ally's failed saving throw or a foe's

  If you roll a 20 on the d20 for an attack roll, you score a Critical Hit, and the attack hits regardless of any modifiers or the target's AC. A Critical Hit lets you roll extra dice for the attack's damage against the target. Roll all the attack's damage dice twice and add them together. Then add any relevant modifiers. See also Damage and Healing.

  . You can force the reroll to be made with

  If you have Advantage on a D20 Test, roll two d20s, and use the higher roll. A roll can't be affected by more than one Advantage, and Advantage and Disadvantage on the same roll cancel each other. See also D20 Tests.

  or

  If you have Disadvantage on a D20 Test, roll two d20s and use the lower roll. A roll can't be affected by more than one Disadvantage, and Advantage and Disadvantage on the same roll cancel each other. See also D20 Tests.

  , and you choose whether to use the reroll or the original roll.
• Reshape Reality. You may wish for something not included in any of the other effects. To do so, state your wish to the DM as precisely as possible. The DM has great latitude in ruling what occurs in such an instance; the greater the wish, the greater the likelihood that something goes wrong. This spell might simply fail, the effect you desire might be achieved only in part, or you might suffer an unforeseen consequence as a result of how you worded the wish. For example, wishing that a villain were dead might propel you forward in time to a period when that villain is no longer alive, effectively removing you from the game. Similarly, wishing for a Legendary magic item or an Artifact might instantly transport you to the presence of the item's current owner. If your wish is granted and its effects have consequences for a whole community, region, or world, you are likely to attract powerful foes. If your wish would affect a god, the god's divine servants might instantly intervene to prevent it or to encourage you to craft the wish in a particular way. If your wish would undo the multiverse itself, threaten the City of Sigil, or affect the Lady of Pain in any way, you see an image of her in your mind for a moment; she shakes her head, and your wish fails.

The stress of casting Wish to produce any effect other than duplicating another spell weakens you. After enduring that stress, each time you cast a spell until you finish a

A Long Rest is a period of extended downtime -- at least 8 hours -- available to any creature. During a Long Rest, you sleep for at least 6 hours and perform no more than 2 hours of light activity, such as reading, talking, eating, or standing watch.

During sleep, you have the Unconscious condition. After you finish a Long Rest, you must wait at least 16 hours before starting another one.

Benefits of the Rest. To start a Long Rest, you must have at least 1 Hit ... [more]

, you take 1d10 Necrotic damage per level of that spell. This damage can't be reduced or prevented in any way. In addition, your Strength score becomes 3 for 2d4 days. For each of those days that you spend resting and doing nothing more than light activity, your remaining recovery time decreases by 2 days. Finally, there is a 33 percent chance chance that you are unable to cast Wish ever again if you suffer this stress.

Source: Player's Handbook, p. 341