Spear Pillar (Japanese: やりのはしらSpear Pillar) is a location in Sinnoh where the ancient Pokémon Dialga, Palkia, and Giratina were created by Arceus and from which, legends say, Sinnoh itself came from.
The area is located at the very peak of Mt. Coronet, and is the ultimate goal of Team Galactic's plot. It is here that Cyrus summons both Dialga and Palkia to claim their powers and create a new universe for himself, free of emotion (though he only manages to summon one of the pair in either Diamond or Pearl, and its power is partly neutralized by the lake trio before the player battles Cyrus). Mars and Jupiter battle against the player and their rival, standing in the way before the player's challenge against Cyrus.
Spoiler warning: this article may contain major plot or ending details.
Cyrus summons both Dialga and Palkia to Spear Pillar, using twoRed Chains: one from the gems of the lake trio, and the other an artificial copy. Together, the power of Dialga and Palkia together is too great for the lake trio to counterbalance as they did in Diamond and Pearl, and so the Pokémon world is shortly doomed. Just when Cyrus believes himself to have won, he feels the presence of Giratina, angered by his actions to destroy the world. Giratina appears between Cyrus and the other two, warping the ancient pillars. It grabs Cyrus, warping him into the Distortion World and leaving behind the tunnel between the worlds. Dialga and Palkia vanish back into their own dimensions, and Cynthia requests the player's help in the Distortion World to repair the link between the two worlds and prevent the warping of reality caused by Giratina's entrance from extending throughout.
After Giratina and Cyrus are defeated in the Distortion World, the player ends up in the Pokémon world once more at the entrance to Turnback Cave. Once the Elite Four are defeated and the player has found both the Adamant and Lustrous Orbs in Mt. Coronet, Cynthia's grandmother will tell the player that in ancient times, people apparently met with Dialga and Palkia, by having the Adamant and Lustrous Orbs. Returning to Spear Pillar with these items, the player will be able to battle with and potentially capture Dialga and Palkia.
If the player has the Azure Flute on returning to Spear Pillar after capturing all of the dragon trio, as well as having the National Dex, blowing into it will cause a staircase leading to the Hall of Origin to appear. It is here that Arceus itself can be captured.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Spear Pillar is also an unlockable stage in Super Smash Bros. Brawl. Players can unlock the stage by completing Event 25: The Aura Is With Me. The background of the stage will feature either Dialga, Palkia or strangely Cresselia, who will occasionally do things to affect the stage such as tilting it diagonally or breaking one section of the top platform; Dialga slows time, Palkia flips or reverses the view, and Cresselia randomly attacks with flying crescents. The lake trio will also make short cameo appearances when something happens to the stage.
The stage's default music is "Victory Road" from Pokémon Ruby and Sapphire. Other pieces of background music are "Dialga / Palkia Battle at Spear Pillar!," "Wild Pokémon Battle! (Diamond / Pearl)," "Team Galactic Battle!," and "Route 209."
At some point Dialga, Palkia, and Cresselia will affect the stage, each with different effects to the field. Dialga appears when the sky has a blue hue, Palkia appears when the sky has a purple hue, and Cresselia appears when the sky is clear.
Trivia
The name "spear pillar" is a reference to the creation myth in Shintō, where the deities Izanagi and Izanami were given the spear 天沼矛 Ame-no-nuboko, with which they created 淤能碁呂島 Onogoroshima, upon which they built the pillar 天御柱 Ame-no-mihashira.
Spear Pillar is technically part of Mt. Coronet, and therefore, Magneton and Nosepass will evolve here if leveled up.
The Escape Rope cannot be used here, despite it being part of Mt. Coronet. This is because the player has used a cave exit into Spear Pillar, thus the game assumes they are no longer in a mountain. Therefore, the Escape Rope cannot be used to return to the outside world (leaving into Mt. Coronet allows for the Escape Rope to be used, however).
The Temporal Pinnacle, at the peak of Temporal Tower, in Pokémon Mystery Dungeon 2, bears resemblance to Spear Pillar, likely due to the connection both have to Dialga.
Despite the fact that it is higher up than the snowy areas of Mt. Coronet, there is no snow on Spear Pillar itself. The rest of Mt. Coronet cannot be seen, either. In this case, as the anime has shown, Spear Pillar is likely to be above the level of the clouds that dump the snow on the lower levels of the mountain.
The only possible way to encounter Palkia before Dialga in Pokémon Platinum is to not have the Adamant Orb held by a party member or in the bag, but to have the Lustrous Orb. If the Adamant Orb is with the player in any manner, Dialga will always appear first, no matter if the Lustrous Orb is also with the player or not.
It is impossible to Fly from Spear Pillar, although it is not inside Mt. Coronet. The reason is most likely to prevent the player from running away from Dialga, Palkia, or Giratina.
