Phantom

Phantoms are flying undead hostile mobs that spawn when the player has not slept or died for three or more in-game days.

Spawning
Phantoms spawn unless the gamerule  is set to. The spawning mechanics differ between Java and Bedrock editions. In both editions, they spawn in the Overworld above the player if the "since last rest" statistic is at least 1 hour (72000 ticks or 3 in-game days). This statistic is reset when the player enters a bed, dies, or switches the  gamerule from   to. Furthermore, the player must not have a block overhead that blocks light in any way; for example, leaves prevent phantoms from spawning as they have a light opacity of 2, but glass does not, as its light opacity is 0. Phantoms do not spawn in Spectator mode, but they do spawn in Creative mode.

Bedrock Edition
Phantom spawning is similar to other monsters spawning: the spawn location must have a light level of 7 or less, and spawns are limited by the monster population cap. Phantoms are also subject to a density cap of 5. Phantom spawn attempts are made on surface blocks throughout the same spawn radius as other monsters. However, when a phantom spawn attempt succeeds the phantom appears somewhere in a 21×15×21 cube centered 28 blocks above the player instead of at the block where the spawn attempt occurred.

Java Edition
Phantoms attempt to spawn every 1–2 minutes. They spawn only if it is night or a thunderstorm is happening, the player is above sea level (y=64) with sky access, and the local difficulty is greater than a randomly chosen value between 0.0 and 3.0. The chance of a successful spawn is $x−72000⁄x$, where x is the number of ticks since the player last entered a bed or died. This roughly comes to a $1⁄4$ (25.0%) chance on day 4, a $2⁄5$ (40.0%) chance on day 5, a $3⁄6$ ($1⁄2$) (50.0%) chance on day 6, $4⁄7$ (about 57.1%) chance on day 7, and so on.

If all conditions are met, a group of phantoms attempt to spawn 20–34 blocks above the player, and off to the side by a taxicab distance of up to 10 blocks. The number of phantoms spawned is 1-2 in Easy difficulty, 1-3 in Normal, and 1-4 in Hard. Phantoms can spawn inside buildings, if the player is outside and the building is both near enough and the building has a large enough cavity for them to spawn inside.

Phantoms are counted toward the hostile mob cap, but they don't adhere to it when spawning. Their spawning mechanic is based on the location of players in the world rather than by chance, unlike regular mob spawning. Phantoms increase in numbers every night a player hasn't slept and will stop spawning when the player sleeps.

Drops
Phantoms drop when killed:
 * 0–1 s when killed by a player or tamed wolf. Looting increases the maximum drops by 1 per level, for a maximum of 4 with Looting III.
 * when killed by the player or a tamed wolf.

Behavior
When idle, phantoms fly around in a roughly circular pattern within 15 to 25 blocks of a player horizontally and within 24 to 35 blocks of a player vertically, leaving a trail of gray smoke while doing so. Their movement speed is one of the fastest of any mob, up to 20 blocks per second. They have a large search radius, targeting and following players from 64 blocks away. Once every 10-20 seconds they swoop down or up quickly to attack their victim. If stopped or hurt during this action, the phantom retreats back to its original elevation. When a path to its original elevation is obstructed by a block, the phantom continues attempting to return to its original elevation until it either attacks or moves out from under the block.

Phantoms are able to move through water at their normal speed and cannot drown.

A phantom's body disappears when under the Invisibility effect, but its eyes and smoke particles are still visible.

Cats hiss at phantoms that are currently attacking players, and phantoms try to stay at least 16 blocks away from them. $$, phantoms also avoid ocelots in the same manner.

Undead
Like other undead mobs, phantoms are harmed by the Instant Health effect, healed by the Instant Damage effect, immune to the Poison and Regeneration effects, ignored by the wither, and affected by the Smite enchantment.

Like zombies and skeletons, phantoms burn in sunlight.

ID




Entity data
Phantoms have entity data associated with them that contains various properties.




 * See Bedrock Edition level format/Entity format.
 * See Bedrock Edition level format/Entity format.

Trivia

 * At one point before the release of 18w10a, the phantom texture was made red, but it was decided that it appeared too much like a Nether mob.
 * The phantom was originally going to have a mouth, like the drawing shown during MINECON Earth, but it was eventually scrapped because "it looked so much like a muppet". Earlier designs can be seen on Minecraft's Instagram account.
 * The sounds of the phantom were taken from Samuel Åberg's baby son screaming.
 * The phantom in the Update Aquatic toy is black. The Phantom itself is blue not black.