Ame no Murakumo ( weapon ) The Ame no Murakumo or Ama - no - Murakumo , also known as Murakumo , Heaven ' s Cloud , Strato , and Emperor , is a recurring weapon in the " Final Fantasy " series . It is usually a high - ranking katana , but outclassed by top weapons like the Muramasa and Masamune . Appearances . " Final Fantasy III " . The Murakumo is available for level 99 Dark Knights in the 3D remake and is tied with the Muramasa as the strongest katana , with an Attack of 140 . It also provides + 20 Agility . " Final Fantasy V " . The Murakumo is the strongest katana ( though the Mutsunokami is stronger in the " Advance " release ) . It can be stolen from Yojimbo or the front section of Neo Exdeath . It provides 114 Attack and 117 Hit , and has a 20 % chance for critical hits . " Final Fantasy VI " . The Murakumo , also known as the Strato , is Cyan ' s third - strongest katana . It can be dropped from Red Dragon , stolen from Samurai Soul , or obtained by betting the Ichigeki , Holy Lance , Masamune , or Magus Rod in the Dragon ' s Neck Coliseum . It has an attack power of 199 , and enables the Bushido and Runic commands . " Final Fantasy VII " . The Heaven ' s Cloud is found in the Sunken Gelnika and is Cloud ' s third - strongest sword , providing 93 Attack and 100 Hit , as well as 31 Magic . It has six unlinked Materia slots with normal growth . " Final Fantasy X " . Any of Auron ' s katanas may become the Heaven ' s Cloud if they have the Break Damage Limit ability as the dominant ability . " Final Fantasy XI " . The Amanomurakumo is the great katana Relic Weapon of the Samurai job , available only to level 75 Samurai after having completed an immensely lengthy and expensive quest ( often taking months of time , hundreds of millions of gil , and the full assistance of an entire Linkshell community to obtain difficult Dynamis drop items ) . It is widely recognized among the endgame community as one of the most powerful weapons , and is the strongest weapon available to the Samurai class due to the unique way in which it modifies the Store TP attribute — pivotal for the heavily TP - reliant Samurai job — and its high Damage statistic ( the highest of all great katana present ) . " Final Fantasy XII " . The Ame - no - Murakumo is the third - strongest katana . It is unlocked on the License Board for 50 LP and is bought for 15 , 000 gil at Balfonheim Port . It gives + 78 to Attack and + 5 to Evasion and is Wind - elemental . All katana have 2 . 39s charge , and 1 . 2s action time , making them average what it comes to attacking speed . The weapon can also be bought from the Hunt Club after giving ten trophies to each bangaa , stolen from the Rare Game Etherian and bought at the bazaar for 13 , 800 gil after selling Water Crystal x9 , Iron Ore x5 , and Screamroot x7 . Ame - no - Murakumo can also found in a treasure chest within the Pharos , Subterra , Umbra level . In the " International Zodiac Job System " version , Ame - no - Murakumo can be equipped by Bushi . " Final Fantasy Tactics " . The Ama - no - Murakumo ( Heaven ' s Cloud in the PS version ) is a mid - powered katana acquired in Chapter 2 . It has an attack power of 11 , evasion of 15 % , compatible with both Dual Wield and Doublehand , and can be equipped by Samurai . It can be purchased from trade cities , such as Dorter for 8 , 000 gil . It can also be found with the Treasure Hunter ability as a rare treasure in Grogh Heights . The katana ' s Iaido ability is called Cloudsea Curse , which deals non - elemental magick damage and can inflict Slow . " Final Fantasy Tactics Advance " . The Heaven ' s Cloud is a mid - powered katana for Ninjas and Assassins . It is Holy - elemental , and makes the user absorb Holy attacks . It teaches Unspell to Ninjas . It adds 39 to Attack and 5 to Resistance . It can be obtained from Cyril for 12 , 000 gil and from any other town for 13 , 500 gil . The Ama - no - murakumo reappears in the sequel , with similar attributes to its previous incarnation . It now also teaches Hoarfrost Blade to Parivirs and Unspell to Ninjas . It provides + 34 Attack and + 5 Resistance , is Holy - elemental , and allows the user to absorb Holy - elemental attacks . It can be bought for 4 , 800 gil in the shop after creating it in the Bazaar after using a Lightwing Crystal , Gemsteel , and Green Liquid . " Final Fantasy Legend III " . The weapon is called Emperor ( Kusanagi Sword in the Japanese version ) and it has a mystic sword icon before its name . This Mystic Sword is the second weakest of the four swords with an attack power of 75 . It deals Mystic - elemental damage , causing double damage against certain bosses and undead enemies . It can even harm enemies who are strong against physical damage . To get the sword , three components must be found , scattered across Pureland . The three items are the Katana , the Crystal , and the Emblem must be brought to Masa who will forge the sword and give it to Arthur once completed . " Bravely Default " . The Ama - no - Murakumo is the strongest katana and can be found in Dimension ' s Hasp . It adds 51 to P . Atk , 1 higher than the strongest sword , Durandal . It also deals double damage to dragons . " Dissidia Final Fantasy " . The Heaven ' s Cloud is a level 100 katana that increases EX Intake Range by + 6m and boosts + 68 Attack . It can be obtained from the shop by trading 31 , 920 gil , a Kazekiri , and Behemoth Horn x5 . " Dissidia 012 Final Fantasy " . The Heaven ' s Cloud is a level 100 katana that increases EX Intake Range by + 3m and boosts + 67 Attack and lessens Defense by - 1 . It can be obtained from the shop by trading 180 , 320 gil , a Murasame , a Kazekiri , and an Eureka Metal . " Final Fantasy All the Bravest " . Murakumo grants + 10 to Attack . It can be equipped by Samurai , Ninja , and Auron . Non - " Final Fantasy " guest appearances . " Blood of Bahamut " . Ama no Murakumo is a katana that can be equipped by Ren .