FINAL FANTASY X
Celestial Weapons / Ultimate Weaponshttps://finalfantasy.fandom.com/wiki/Celestial_Weapon
Cloudy MirrorLocation: Remiem Temple to the east of the Calm Lands. Race the champion chocobo there, and win.
Celestial Mirror (Cloudy Mirror Required)Location: Macalania Woods. Speak to the woman at the Thunder Plains entrance. She mentions something about her missing husband, who is also in the woods in an area near the Bevelle exit. Speak to him, and he will return to his wife. Once they are reunited, talk to them again and they mention something about their missing son. Go up the crystal pathway to an altar resembling a giant plant bud. Examinging the altar with the Cloudy Mirror changes it into the Celestial Mirror.
TidusCaladbolgLocation: Calm Lands, north west end down a ramp. You must beat the chocobo trainer in a race, and the person guarding it will move out of the way.
Sun CrestLocation: Search the room in which you fight Lady Yunalesca for stairs. Go up and down them until they teleport you into a identical version of the room with a treasure chest.
Sun SigilLocation: Chocobo Trainer; Race them, and get a time of 0:00:00. Very RNG. Good luck.
YunaNirvanaLocation: Monster Arena in Calm Lands. Reward for capturing 9 different species from the Calm Lands.
Mood CrestLocation: Beach in Besaid.
Moon SigilLocation: Remiem Temple east of the Calm Lands. Must defeat all Belgemine's aeons, then send her. Requires Yojimbo and Anima.When the player defeats Bahamut, they receive the Flower Sceptre. Then, the player must capture 1 of every species in Mt. Gagazet and earn the Blossom Crown as a Monster Arena reward.Use the Flower Sceptre and the Blossom Crown on the door behind Belgemine to unlock it and obtain the final aeon, the Magus Sisters. Defeat Belgemine's Magus Sisters Aeons, then send Belgemine to finally obtain the Moon Sigil.
WakkaWorld ChampionLocation: Luca, in a cafe. Player must place in at least 3rd in a tournament, then speak to the owner and agree to show her the Celestial Mirror.
Jupiter (or Mercury) CrestLocation: Locker in the Aurochs locker room.
Jupiter (or Mercury) SigilLocation: 50% chance it appears as a prize in a Blitzball League game once the player has won all three of Wakka's Overdrives in previous competitions.
KimariSpirit LanceLocation: Thunder Plains. The player must pray at three different Qactuar Stones which makes a spiritual Qactuar appear at either the North or South end. The player must have also read the text of Gandof and the Qactuars (book) located on the counter in Rin's Travel Agency in the Thunder Plains. The player must follow the Qactuar to the broken tower and press square (or its equivalent) to pray at the tower.
Saturn / Jupiter CrestLocation: Mt. Gagazet, just past the spot where the players fight Seymour Flux. The treasure chest is hidden from view among the pillars on the left.
Saturn / Jupiter SigilLocation: Butterfly hunt mini-game in the Macalania Woods after obtaining the airship. ?The Sigil appears the second time the player wins?
LuluOnion KnightLocation: search for coordinates "12, 57" while aboard the Airship to locate Baaj (temple). Geosgaeno must be defeated, then search the underwater area for a chest that is hidden out of sight.
Venus / Mars CrestLocation: Farplane in Guardosalam. Visit the Farplane after Tidus mentions Seymour's departure for Macalania Temple. If missed, return here after obtaining the airship.
Venus / Mars SigilLocation: Thunder Plains; dodge 200 lightning bolts consecutively, without leaving the area, and without reseting / loading your save data.
AuronMasamuneLocation: Djose / Mushroom Rock Road. The north-wester passage leads to a rising platform that leads to a statue of Lord Mi'ihen. Players must place the Rusty Sword here to reveal a glyph. The glyph reveals the sword. The Rusty Sword is located on the eastern cliff outside the Cavern of the Stolen Fayth, north of the Calm Lands, south of Mt. Gagazet.
Mars / Saturn CrestLocation: Near the entrance to Mushroom Rock Road along the final area of the Mi'ihen Highroad.
Mars / Saturn SigilLocation: Monster Arena reward for unlocking a total of 10 Area Conquest or Species Conquest monsters (any combination of the two).
RikkuGodhandLocation: Mushroom Rock Road. The player must enter a password "GODHAND" on the Airship, and going to the new location.
Mercury / Venus CrestLocation: Bikanel Desert. Found in a treasure chest in a shifting sand pit in the final area.
Mercury / Venus SigilLocation: Complete the cactuar sidequest on Bikanel Island, which is available after obtaining the airship.https://finalfantasy.fandom.com/wiki/Cactuar_Nation#Village_of_the_Cactuars
FINAL FANTASY X
Celestial Weapons / Ultimate Weapons
https://finalfantasy.fandom.com/wiki/Celestial_Weapon
Cloudy Mirror
Location: Remiem Temple to the east of the Calm Lands. Race the champion chocobo there, and win.
Celestial Mirror (Cloudy Mirror Required)
Location: Macalania Woods. Speak to the woman at the Thunder Plains entrance. She mentions something about her missing husband, who is also in the woods in an area near the Bevelle exit. Speak to him, and he will return to his wife. Once they are reunited, talk to them again and they mention something about their missing son. Go up the crystal pathway to an altar resembling a giant plant bud. Examinging the altar with the Cloudy Mirror changes it into the Celestial Mirror.
Tidus
Caladbolg
Location: Calm Lands, north west end down a ramp. You must beat the chocobo trainer in a race, and the person guarding it will move out of the way.
Sun Crest
Location: Search the room in which you fight Lady Yunalesca for stairs. Go up and down them until they teleport you into a identical version of the room with a treasure chest.
Sun Sigil
Location: Chocobo Trainer; Race them, and get a time of 0:00:00. Very RNG. Good luck.
Yuna
Nirvana
Location: Monster Arena in Calm Lands. Reward for capturing 9 different species from the Calm Lands.
Mood Crest
Location: Beach in Besaid.
Moon Sigil
Location: Remiem Temple east of the Calm Lands. Must defeat all Belgemine's aeons, then send her. Requires Yojimbo and Anima.
When the player defeats Bahamut, they receive the Flower Sceptre. Then, the player must capture 1 of every species in Mt. Gagazet and earn the Blossom Crown as a Monster Arena reward.
Use the Flower Sceptre and the Blossom Crown on the door behind Belgemine to unlock it and obtain the final aeon, the Magus Sisters. Defeat Belgemine's Magus Sisters Aeons, then send Belgemine to finally obtain the Moon Sigil.
Wakka
World Champion
Location: Luca, in a cafe. Player must place in at least 3rd in a tournament, then speak to the owner and agree to show her the Celestial Mirror.
Jupiter (or Mercury) Crest
Location: Locker in the Aurochs locker room.
Jupiter (or Mercury) Sigil
Location: 50% chance it appears as a prize in a Blitzball League game once the player has won all three of Wakka's Overdrives in previous competitions.
Kimari
Spirit Lance
Location: Thunder Plains. The player must pray at three different Qactuar Stones which makes a spiritual Qactuar appear at either the North or South end. The player must have also read the text of Gandof and the Qactuars (book) located on the counter in Rin's Travel Agency in the Thunder Plains. The player must follow the Qactuar to the broken tower and press square (or its equivalent) to pray at the tower.
Saturn / Jupiter Crest
Location: Mt. Gagazet, just past the spot where the players fight Seymour Flux. The treasure chest is hidden from view among the pillars on the left.
Saturn / Jupiter Sigil
Location: Butterfly hunt mini-game in the Macalania Woods after obtaining the airship. ?The Sigil appears the second time the player wins?
Lulu
Onion Knight
Location: search for coordinates "12, 57" while aboard the Airship to locate Baaj (temple). Geosgaeno must be defeated, then search the underwater area for a chest that is hidden out of sight.
Venus / Mars Crest
Location: Farplane in Guardosalam. Visit the Farplane after Tidus mentions Seymour's departure for Macalania Temple. If missed, return here after obtaining the airship.
Venus / Mars Sigil
Location: Thunder Plains; dodge 200 lightning bolts consecutively, without leaving the area, and without reseting / loading your save data.
Auron
Masamune
Location: Djose / Mushroom Rock Road. The north-wester passage leads to a rising platform that leads to a statue of Lord Mi'ihen. Players must place the Rusty Sword here to reveal a glyph. The glyph reveals the sword. The Rusty Sword is located on the eastern cliff outside the Cavern of the Stolen Fayth, north of the Calm Lands, south of Mt. Gagazet.
Mars / Saturn Crest
Location: Near the entrance to Mushroom Rock Road along the final area of the Mi'ihen Highroad.
Mars / Saturn Sigil
Location: Monster Arena reward for unlocking a total of 10 Area Conquest or Species Conquest monsters (any combination of the two).
Rikku
Godhand
Location: Mushroom Rock Road. The player must enter a password "GODHAND" on the Airship, and going to the new location.
Mercury / Venus Crest
Location: Bikanel Desert. Found in a treasure chest in a shifting sand pit in the final area.
Mercury / Venus Sigil
Location: Complete the cactuar sidequest on Bikanel Island, which is available after obtaining the airship.
https://finalfantasy.fandom.com/wiki/Cactuar_Nation#Village_of_the_Cactuars