Terastal phenomenon

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Artwork of the Terastal phenomenon
A Terastallized Pikachu with the Flying-type Tera Jewel

The Terastal phenomenon or Terastallization (Japanese: テラスタル Terastal) is a temporary transformation affecting Pokémon that was introduced in Generation IX. It gives Pokémon a gem-like appearance and changes their type(s).


Some terms related to this game mechanic:

  • Terastal phenomenon or Terastallization (Japanese: テラスタル Terastal) is the transformation.
  • Terastallize (Japanese: テラスタルする Terastallize) is the related verb for this transformation.
  • Tera Pokémon (Japanese: テラスタルポケモン Terastal Pokémon), also known as Terastallized Pokémon (Japanese: テラスタルしたポケモン Terastallized Pokémon), are Pokémon affected by this transformation.
  • The Tera Type (Japanese: テラスタイプ Teras Type) is the type of the Terastallized Pokémon.
  • Terastal energy (Japanese: テラスタルエネルギー Terastal energy) is the energy involved in this transformation.
  • The Tera Jewel (Japanese: テラスタルジュエル Terastal Jewel) is the jewel on top of the head of a Terastallized Pokémon.
  • The Tera Orb (Japanese: テラスタルオーブ Terastal Orb) is the Key Item that allows a Pokémon to Terastallize.
  • Tera Shards (Japanese: テラピース Tera Piece) are any of the items that change a Pokémon's Tera Type. There are 18 Tera Shards, one for each type.
  • A Tera Raid Battle (Japanese: テラレイドバトル Tera Raid Battle) is a type of Pokémon battle.
  • Tera Blast (Japanese: テラバースト Tera Burst) is a move related to this phenomenon.
  • Terastallized state (Japanese: テラスタルした姿 Terastal Appearance) refers to the appearance and effects that certain Pokémon exhibit when they undergo the process of Terastallization.

Some examples of in-game dialogue from Pokémon Scarlet and Violet:

  • "When it is charged with energy, it can be used to cause Pokémon to Terastallize." (excerpt from the description of Tera Orb)
  • "If the user has Terastallized, it unleashes energy of its Tera Type." (excerpt from the description of Tera Blast)
  • "If an opponent’s Pokémon Terastallizes during battle... observe a Pokémon's Tera Jewel closely to see which type it has become!" (Hassel)
  • "Terastallizing gives a real boost, see!" (Nemona)

In the core series games


Spoiler warning: this article may contain major plot or ending details.

There is a lot of mystery surrounding the Terastal phenomenon and why it only happens in Paldea. Professor SadaS/Professor TuroV was known to be researching this mysterious transformation.[1] It is later reveled the Terastal phenomenon also occurs in Kitakami.

The Terastal phenomenon was first discovered 140 years ago in Area Zero along with Terastallized Pokémon at the bottom of the Great Crater of Paldea. However, attempts to remove Terastallized Pokémon from the crater caused the light to disappear. Further details of the Terastal phenomenon thus remained unclear for a while.

Ten years before the events of Pokémon Scarlet and Violet, the game's professor started to solve the mystery. The professor discovered the energy emitted from shining crystals in Area Zero is what triggered the Terastal phenomenon. The Tera Orbs were then created by the professor from the Terastal energy located in Area Zero. Clavell helped support the research on it. This allowed people to Terastallize their Pokémon outside of Area Zero. The Tera Orb was then shared to the Paldea League and Naranja AcademyS/Uva AcademyV.

At some point, the Terastal energy was used by the professor to create a time machine, bringing in Paradox Pokémon from the ancient pastS/distant futureV, including a pair of KoraidonS/MiraidonV.

The crystalline petals of Glimmora seem to resemble the Tera Jewels that appear during the Terastal phenomenon. It is unknown if there is a connection between Glimmora and the Terastal phenomenon, though many of them (along with its pre-evolution, Glimmet) can be found in Area Zero, the place where the phenomenon originated. Additionally, eight Glimmet Crystals are needed to make TM171 (Tera Blast), a move that changes type with Terastalizing.

The Scarlet Book/Violet Book makes cryptic hints that it may be linked to an unknown Pokémon resembling a disk made of layers of overlapping hexagons, but the truth of this has yet to be confirmed. A journal in Research Station No. 1 further implies its existence and relationship to the phenomenon. The journal reads:

"We've determined that this energy crystallization is linked to the being we call ▊▊▊▊▊▊. The interlocking hexagonal plates that comprise ▊▊▊▊▊▊'s shell must somehow cause this phenomenon—which I've dubbed 'Terastallizing.'"

This Pokémon is revealed to be Terapagos, based on its description. A nineteenth Tera Type was later discovered that appears to have all 18 types as one.[2]

201 Spoilers end here. 201


Concept art of Fire-type and Water-type Tera Jewels from Pokémon Scarlet and Violet

Trainers who obtain a Tera Orb are able to use it to Terastallize their Pokémon, which makes a Tera Jewel appear above the Pokémon's head, causes the Pokémon's body to glisten like gems. This changes the Pokémon's defensive type(s) to its Tera Type, removing all other types. Terastallized Pokémon are identified by having "Tera" in front of their name.

While Terastallized, Pokémon receive STAB on moves matching their Tera Type, in addition to moves matching the type(s) they had immediately before Terastallizing. If the Pokémon's Tera Type is the same as one of its original types, moves of that type receive an ×2 power boost instead of the usual ×1.5.[1]

During this time, Adaptability works only for the Tera Type (with ×1.5 becoming ×2 and ×2 becoming ×2.25). Additionally, moves of the Tera Type that have base power below 60 but are not a multi-strike move or an increased priority move are stealthily boosted to 60BP; this is checked for after Technician's boost.[3] Pokémon can only have one Tera Type. The move Tera Blast changes type to the Pokémon's innate Tera Type upon Terastalizing.[4]

Terastallized Pokémon cannot have their type changed from moves and Abilities such as Soak, Double Shock, Protean, or Transform. A Pokémon using Transform before Terastallizing will not copy its opponent's Tera Type and will instead keep its own.

The Terastal phenomenon lasts until the battle ends or the Terastallized Pokémon faints. After being used once, the Tera Orb loses all its Terastal energy and has to be recharged by either touching crystals containing Terastal energy or visiting a Pokémon Center.[1] An exception to this can be found in Area Zero, where the Tera Orb will automatically recharge each time it is used.

After beating the Medali Gym, the player can change their Pokémon's Tera Type at the Treasure Eatery by exchanging 50 Tera Shards of a given type with the chef.

The Terastal phenomenon is only found in Paldea, apparently due to the Terastal energy seeping from the ground of the region.[1] However in Kitakami, the Terastal phenomenon has been shown occur there due to Ogerpon being able to terastallize during its battle.

Catching Tera Pokémon

Normal wild Pokémon found in Paldea typically have a Tera Type that matches one of their normal types. This Tera Type does not reflect their potential evolutions and cannot be passed down through breeding. For example, a Charcadet will always have a Fire Tera Type. Typically, there are only two ways to obtain a wild Tera Pokémon with unique typing: either catch a wild Tera Pokémon scattered around Paldea, or participate in a Tera Raid Battle. These Pokémon may know TM moves that match this set Tera Type.

Wild Tera Pokémon

There are precisely 68 wild Tera Pokémon scattered around Paldea, the majority with unique Tera Types. They can be found in fixed locations and typically have Tera Types different from their base types, a notable exception being the eight Eeveelutions, who have Tera Types that match their base types, and would normally have a Normal Tera Type if evolved from Eevee. The wild Tera Pokémon are indicated by a bright glow emitting from their bodies, and when battled against will immediately Terastallize. Wild Tera Pokémon cannot be caught while Terastallized until after they lose their Tera Jewel, which will happen after sustaining a certain amount of damage from direct attacks. Once this threshold is reached, the damage the Pokémon has taken will be capped until they lose their Tera Jewel, even from multi-strike moves.

Wild Tera Pokémon will eventually respawn after being caught or defeated and will always have a perfect 31 in at least three of their IVs.

Tera Raid Battle

Tera Raid Battles occur all over Paldea, with the locations changing at random each real-life day at midnight. These locations are indicated on the map, and in the overworld are indicated by a large, colored "shining crystal", with a beam of sparkling lights shooting into the sky.

Tera Jewels

Type Image Description
Normal Tera Jewel Normal.png The Normal-type Tera Jewel is based on a diamond ring, or possibly a Normal Gem.
Fighting Tera Jewel Fighting.png The Fighting-type Tera Jewel is based on a large fist rising upwards in an uppercut motion, similar to All-Out Pummeling and Max Knuckle.
Flying Tera Jewel Flying.png The Flying-type Tera Jewel is based on a cluster of helium balloons, a possible reference to Flying Pikachu.
Some of the official art for the phenomenon features Pikachu, and a Flying Tera Type Pikachu has been distributed as a Mystery Gift.
Poison Tera Jewel Poison.png The Poison-type Tera Jewel is based on the skull and crossbones, the standard warning sign for poisonous substances, which has also been used for the Generation I animation for receiving Poison damage.
Ground Tera Jewel Ground.png The Ground-type Tera Jewel is based on a cut-through model of the Earth.
Rock Tera Jewel Rock.png The Rock-type Tera Jewel is based on the Parthenon, an ancient temple being part of the Acropolis of Athens.
Bug Tera Jewel Bug.png The Bug-type Tera Jewel is based on the wings and antennae of an insect.
Ghost Tera Jewel Ghost.png The Ghost-type Tera Jewel is based on the Generation I sprite of a ghost.
Steel Tera Jewel Steel.png
Tera Jewel Steel Side.png
The Steel-type Tera Jewel is based on a single-bladed axe.
Fire Tera Jewel Fire.png The Fire-type Tera Jewel is based on a candelabra or chandelier.
Water Tera Jewel Water.png The Water-type Tera Jewel is based on a water fountain.
Grass Tera Jewel Grass.png The Grass-type Tera Jewel is based on a bouquet of flowers.
Electric Tera Jewel Electric.png The Electric-type Tera Jewel is based on a lightbulb.
Psychic Tera Jewel Psychic.png The Psychic-type Tera Jewel is based on an eye, resembling the type's TCG type symbol.
Ice Tera Jewel Ice.png The Ice-type Tera Jewel is based on a snowflake.
Dragon Tera Jewel Dragon.png The Dragon-type Tera Jewel is based on the head and wings of a dragon.
Dark Tera Jewel Dark.png The Dark-type Tera Jewel is based on a face with a mischievous grin.
Fairy Tera Jewel Fairy.png The Fairy-type Tera Jewel is based on a winged heart.
Unknown 19th Tera Type.png This Tera Jewel is a large jewel surrounded by the symbols of every other type, implying that it is connected to all eighteen types in some way.

Special Terastallized state

Similar to the Dynamax and Gigantamax phenomenon, some Pokémon species have a special Terastallized state, which changes their appearance significantly when Terastallizing, instead of simply gaining their Tera Type's jewel.

Currently, Ogerpon is the only Pokémon known to have special Terastallized states, as well as the only who cannot change its Tera Type.

Ndex Pokémon Type Terastallized state
#1017 HOME1017.png Ogerpon
Teal Mask
Grass Teal Mask Ogerpon's Terastal form.png
HOME1017W.png Ogerpon
Wellspring Mask
Water Wellspring Mask Ogerpon's Terastal form.png
HOME1017H.png Ogerpon
Hearthflame Mask
Fire Hearthflame Mask Ogerpon's Terastal form.png
HOME1017C.png Ogerpon
Cornerstone Mask
Rock Cornerstone Mask Ogerpon's Terastal form.png

In the spin-off games

Pokémon Mezastar

In the anime

Main series

Pokémon Horizons: The Series

Tera Jewels in the anime

The Terastal phenomenon debuted in HZ010, where Brassius Terastallized his Sudowoodo into a Grass type during his battle with Roy. After the battle, Nemona explained how the phenomenon works to Liko and Roy.

In HZ014, Friede Terastallized his Charizard into a Dark type during his fight against Spinel's Magneton and Beheeyem.


In the manga

Pokémon Adventures

Scarlet & Violet arc

Terastallize debuted in PASV01, where Nemona Terastallized her Pawmi into a Electric type.

In the TCG

Tera Charizard ex from Obsidian Flames — note that it is Darkness-type instead of Fire-type like Charizard cards normally are
Main article: Pokémon ex (TCG)

Terastallized Pokémon were first introduced in the English Scarlet & Violet expansion (the Japanese Scarlet ex and Violet ex expansions). These Pokémon are known as Tera (Japanese: テラスタル Terastal) Pokémon. While on the Bench, Tera Pokémon do not receive any damage from attacks done by either player.

Some Tera Pokémon ex can have types that differ from their usual types. These so-called type-shifted Tera Pokémon ex use the same Energy as their usual type for attacks; however, they have a different Weakness that corresponds with their shifted type.


In other languages

Language Title
Chinese Cantonese 太晶化 Taaijīngfa
Mandarin 太晶化 Tàijīnghuà
France Flag.png French Téracristallisation
Germany Flag.png German Phänomen der Terakristallisierung
Italy Flag.png Italian Fenomeno Teracristal
South Korea Flag.png Korean 테라스탈 Terastal
Spain Flag.png Spanish Fenómeno de la teracristalización

Tera Type

Language Title
Chinese Cantonese 太晶屬性 Taaijīng Suhksing
Mandarin 太晶屬性 / 太晶属性 Tàijīng Shǔxìng
France Flag.png French Type Téracristal
Germany Flag.png German Tera-Typ
Italy Flag.png Italian Teratipo
South Korea Flag.png Korean 테라스탈타입 Terastal Type
Spain Flag.png Spanish Teratipo


See also

Pokémon forms and variants
Permanent: Shiny Pokémon (GO) • Alternately colored Pokémon (anime) • Gender differences‎
Brilliant PokémonAlpha Pokémon
Paradox PokémonEcologically similar Pokémon
Transformations: Mega EvolutionPrimal ReversionBond PhenomenonUltra Burst
Dynamax (Gigantamax) • EternamaxTerastal phenomenon
Groups: Totem PokémonNoble PokémonTitan Pokémon
Regional forms: AlolanGalarianHisuianPaldean
Pikachu variants: Surfing PikachuFlying PikachuCosplay PikachuPikachu in a cap
Miscellaneous: Giant PokémonSpiky-eared Pichu
Spin-off original: Shadow Pokémon (GO) • Shadow Lugia
Primal DialgaToy Pokémon (Rusty Pokémon)
Shadow MewtwoPokéxelForms in Pokémon GO
Anime original: Pink ButterfreeClone PokémonCrystal Onix
Mirage PokémonMeta GroudonGreen-crystal Deoxys
Manga original: Thu-Fi-ZerBlack FogBlack Tyranitar

Project Games logo.png This game mechanic article is part of Project Games, a Bulbapedia project that aims to write comprehensive articles on the Pokémon games.