View source for Odd Keystone

{{ItemInfobox/head
|name=Odd Keystone
|jname=かなめいし
|jtrans=Keystone
|art=Dream Odd Keystone Sprite
|caption=Pokémon Global Link artwork
|gen=IV
|colorscheme=Items
|fling=yes
}}
{{ItemInfobox/BagRow|IV|Items}}
{{ItemInfobox/BagRow|V|Items}}
{{ItemInfobox/BagRow|VI|Items}}
{{ItemInfobox/BagRow|VII|Items}}
{{ItemInfobox/BagRow|VIII|Other Items|group={{gameabbrev8|BDSP}}}}
{{ItemInfobox/BagRow|VIII|Key items|group={{gameabbrev8|LA}}}}
{{ItemInfobox/BagRowBottom|IX|Other Items}}
{{ItemInfobox/Fling|80|colorscheme=Items}}
|}

The '''Odd Keystone''' (Japanese: '''かなめいし''' ''Keystone'') is a type of [[item]] introduced in [[Generation IV]]. Odd Keystones act like containers, capable of trapping and binding {{p|Spiritomb}} inside themselves. All Spiritomb use it as a base. In {{g|Legends: Arceus}}, the Odd Keystone is a [[Key item]].

==In the core series games==
===Price===
{{ItemPrice/head|items}}
{{ItemPrice|{{gameabbrev4|DPPt}}{{gameabbrev4|HGSS}}<br>{{gameabbrev5|BWB2W2}}<br>{{gameabbrev6|XYORAS}}<br>{{gameabbrev7|SMUSUM}}<br>{{gameabbrev8|BDSP}}|N/A|{{PDollar}}1,050}}
{{ItemPrice|{{gameabbrev9|SV}}|N/A|{{PDollar}}525}}
|}
|}
In the [[Generation V]] games, the Odd Keystone can be sold to the {{DL|Item maniac|ore maniac}} inside the [[Icirrus City]] [[Pokémon Center]] for {{PDollar}}3000.

===Effect===
====Pokémon Diamond, Pearl, Platinum, Brilliant Diamond, and Shining Pearl====
In {{game2|Diamond|Pearl|Platinum}} and {{g|Brilliant Diamond and Shining Pearl}}, an Odd Keystone can be placed in the [[Hallowed Tower]], which is located on {{rt|209|Sinnoh}} in the [[Sinnoh]] [[region]]. This item has no use in other regions.

If the player talks to 32 or more other players in the Sinnoh [[Underground]]{{sup/4|DPPt}}/32 or more [[Non-player character|NPCs]] in the [[Grand Underground]]{{sup/8|BDSP}} after placing the Odd Keystone, a wild {{p|Spiritomb}} will be encountered the next time the player inspects the Hallowed Tower.

In Pokémon Diamond, Pearl, and Platinum, while in theory it is necessary to talk to 32 different players, in practice another player can be counted twice as long as the player themselves leaves the Underground or enters their [[Secret Base]] using the "close door and decorate" function between the interactions; this potentially allows a player to encounter Spiritomb by interacting with the same player 32 times.

Once placed in [[Hallowed Tower]], the player can check the Odd Keystone to track their progress. The message gradually changes as the player interacts with more players in the Underground.

====Pokémon Legends: Arceus====
In [[Pokémon Legends: Arceus]], after the player obtains the Odd Keystone from [[Vessa]], they are tasked to find 107 [[wisp]]s throughout [[Hisui]]. The number of wisps collected is shown on the Odd Keystone in the [[Bag|satchel]]. After the 107 wisps are found and the player talks to Vessa again, the player is tasked to go to the [[Shrouded Ruins]] to find Vessa and the final wisp. After the final wisp is found, the Odd Keystone disappears, and upon interacting with the mysterious statue in the shape of the Odd Keystone, the player can encounter Spiritomb.

===Description===
{{movedesc|items}}
{{movedescentry|{{gameabbrev4|DPPtHGSS}}<br>{{gameabbrev5|BWB2W2}}<br>{{gameabbrev6|XYORAS}}<br>{{gameabbrev7|SMUSUM}}<br>{{gameabbrev8|BDSP}}<br>{{gameabbrev9|SV}}|A vital item that is needed to keep a stone tower from collapsing. Voices can be heard from it occasionally.}}
{{movedescentry|{{gameabbrev8|LA}}|A mysterious stone that can be used to collect wisps that glow with an eerie purple light.}}
|}
|}

===Acquisition===
{{ItemAvailability/head|items}}
|-
| {{gameabbrev4|DPPt}}
| [[Twinleaf Town]], {{rt|208|Sinnoh}}
| [[Underground]]
|-
| {{gameabbrev4|HGSS}}
| 
| ''[[Trade]]''
|-
| {{gameabbrev5|BW}}
| 
| ''[[Trade]]''
|-
| {{gameabbrev5|B2W2}}
| 
| [[Join Avenue]] ({{DL|Join Avenue|Antique Shop}})
|-
| {{gameabbrev8|BDSP}}
| [[Twinleaf Town]], {{rt|208|Sinnoh}}
| [[Grand Underground]]
|-
| {{gameabbrev8|LA}}
| [[Jubilife Village]] (from [[Vessa]] after completing [[Task#Missions|Mission]] 7: "The Frenzy of the Lord of the Woods")
|
|}
|}

==Gallery==
===Game assets===
====Sprites and models====
{| style="margin:auto; text-align:center; {{roundy|20px}} border: 2px solid #{{items color dark}}; background: #{{items color}}; font-size: 80%"
|-
|style="{{roundy|80px}} border: 2px solid #{{items color dark}}; background: #{{items color light}}" width=96px; height=96px"| [[File:Mine Odd Keystone.png]]
| style="{{roundy|80px}} border:2px solid #{{items color dark}}; background:#{{items color light}}" width=96px; height=96px"| [[File:Odd Keystone ORAS.png|70px]]
|style="{{roundy|80px}} border: 2px solid #{{items color dark}}; background: #{{items color light}}" width=96px; height=96px"| [[File:Mine Odd Keystone BDSP.png|70px]]
|style="{{roundy|80px}} border: 2px solid #{{items color dark}}; background: #{{items color light}}" width=96px; height=96px"| [[File:Bag Odd Keystone LA Sprite.png|100px]]
|style="{{roundy|80px}} border: 2px solid #{{items color dark}}; background: #{{items color light}}"| [[File:Bag Odd Keystone SV Sprite.png|100px]]
|-
| {{color2|000|Underground}} sprite from<br>{{color2|000|Pokémon Diamond and Pearl Versions|Diamond, Pearl}}, and {{color2|000|Pokémon Platinum Version|Platinum}}
| Model from<br>{{color2|000|Pokémon Omega Ruby and Alpha Sapphire|Omega Ruby and Alpha Sapphire}}
| {{color2|000|Grand Underground}} sprite from<br>{{color2|000|Pokémon Brilliant Diamond and Shining Pearl|Brilliant Diamond and Shining Pearl}}
| Bag sprite from<br>{{color2|000|Pokémon Legends: Arceus|Legends Arceus}}
| Sprite from<br>{{color2|000|Pokémon Scarlet and Violet|Scarlet and Violet}}
|}

===Other appearances===
[[File:442Spiritomb.png|thumb|left|150px|Spiritomb, with the Odd Keystone visible at the base of its body]]
[[File:Spiritomb Encounter ORAS Animated.png|thumb|<!--APNG, do not set a thumbnail size--> Encountering Spiritomb at Sea Mauville]]

The Odd Keystone is clearly visible on {{p|Spiritomb}}'s body.

In {{g|Omega Ruby and Alpha Sapphire}}, an Odd Keystone appears in the overworld on [[Sea Mauville]]. It appears just before the player faces Spiritomb and therefore cannot be collected. Documents aboard the ship reveal it was originally donated by the [[Oreburgh Mine]].

In {{g|Legends: Arceus}}, an enormous statue in the shape of an Odd Keystone appears in the [[Shrouded Ruins]]. By interacting with the statue after obtaining all 108 wisps, the player can face Spiritomb.
{{-}}

==In spin-off games==
===Pokémon Mystery Dungeon series===
In [[Pokémon Mystery Dungeon series|Pokémon Mystery Dungeon]]: [[Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness|Explorers of Time, Darkness]], and [[Pokémon Mystery Dungeon: Explorers of Sky|Sky]], when the {{player}} and {{mdc|Partner Pokémon||partner}} reach [[Sealed Ruin]] Pit, they see an Odd Keystone, not realizing it is a Pokémon. Suddenly, it will reveal itself to be {{p|Spiritomb}} and attack the duo.

In Pokémon Mystery Dungeon: Explorers of Time, Darkness, and Sky, Spiritomb's {{status|sleep}}ing sprites involve it returning to the Odd Keystone.

==In the anime==
[[File:Odd Keystone anime.png|thumb|250px|An Odd Keystone in the {{pkmn|anime}}]]
In ''[[DP056|The Keystone Pops!]]'', while {{Ash}} and {{an|Dawn}} were having a practice battle between {{AP|Buizel}} and {{TP|Dawn|Aipom}}, Buizel's {{m|Sonic Boom}} accidentally destroyed the [[Hallowed Tower]], releasing a {{p|Spiritomb}} from the Odd Keystone sealed inside of it. Ash and {{AP|Pikachu}} later battled Spiritomb, eventually defeating it and resealing it back into the Odd Keystone, which was then placed back into the rebuilt Hallowed Tower.

In ''[[JN091|The Spectral Express!]]'', Ash and [[Goh]] came across an Odd Keystone aboard a ghost train. When Ash touched it, one of Spiritomb's spirits entered his body and possessed him into doing mischievous deeds. Angered by losing one of its spirits, Spiritomb emerged from the keystone and went on a rampage. Once the spirit was forced out of Ash's body and [[Ash's Gengar]] succeeded in returning it to Spiritomb, the {{pkmn|category|Forbidden Pokémon}} calmed down and returned into its keystone. The keystone was later taken away by a group of {{p|Gastly}} and {{p|Haunter}} when the ghost train stopped at a cemetery.

In ''[[JN123|Bewitch, Battle, and Bewilder!]]'', an Odd Keystone appeared as a part of {{an|Cynthia}}'s Spiritomb.
{{-}}

==In the manga==
[[File:Odd Keystone Adventures.png|thumb|180px|An Odd Keystone in [[Pokémon Adventures]]]]
===Pokémon Adventures===
===={{MangaArc|Diamond & Pearl}}====
[[Cynthia]]'s {{p|Spiritomb}} is connected to an Odd Keystone, which was fully seen in ''[[PS409|Shunning Spiritomb]]'', when the {{pkmn|category|Forbidden Pokémon}} was {{status|freeze|frozen}} by [[Cyrus]]'s {{p|Weavile}} and she retracted into the stone.

===={{MangaArc|Platinum}}====
An Odd Keystone appeared in ''[[PS417|Leaping Past Lopunny]]'' among the rare stones that {{Steven}} had found during his stay in [[Sinnoh]].

==Trivia==
[[File:Alpha Spiritomb.png|thumb|230px|Red face on Alpha Spiritomb]]
* In {{g|Legends: Arceus}}, if an {{pkmn2|Alpha}} {{p|Spiritomb}} appears, the entire face of the Odd Keystone turns red, in addition to Spiritomb's eyes.

==In other languages==
{{langtable|color={{items color light}}|bordercolor={{items color dark}}
|zh_yue=楔石 ''{{tt|Sitsehk|Keystone}}''
|zh_cmn=楔石 ''{{tt|Xiēshí|Keystone}}''
|fi=Outo riimukivi
|fr=Clé de Voûte
|de=Spiritkern
|it=Roccianima
|ko=쐐기돌 ''{{tt|Sswaegi Dol|Keystone}}''
|pl=Dawne Więzienie{{tt|*|DP056 (James's card)}}<br>Stary Kamień{{tt|*|DP056 (Pokédex description)}}
|pt_br=Pedra sagrada{{tt|*|Pokémon GO, TCG (Team Up, Rebel Clash-present)}}<br>Pedra única{{tt|*|TCG (Unbroken Bonds)}}
|es=Piedra Espíritu{{tt|*|Generation VI}}<br/>P. Espíritu{{tt|*|Generations IV-V}}<br/>Piedra Base{{tt|*|anime}}
|vi=Đá Đỉnh Vòm
}}

==See also==
* [[List of Key Items (Generation VIII)]]

{{-}}
{{Project ItemDex notice}}

[[Category:Items]]
[[Category:Key Items]]<!--Legends: Arceus-->

[[de:Spiritkern]]
[[es:Piedra espíritu]]
[[fr:Clé de Voûte]]
[[it:Roccianima]]
[[ja:かなめいし]]
[[zh:楔石（道具）]]