Ragnarok (weapon)

The Ragnarok is a weapon that appears in various games in the series. It is usually one of the most powerful swords.

Final Fantasy
The Ragnarok is a sword obtained from beating the dragon at level 20 of the Lifespring Grotto called Shinryu. This fight is intensely difficult, as Shinryu has roughly 35,000HP, 175% the health of final boss of the game. This sword can only be obtained in the Game Boy Advance release of Final Fantasy I & II: Dawn of Souls since Lifespring Grotto is an added dungeon rewarded to players who have defeated the Kraken.

Final Fantasy IV
The Ragnarok is Cecil's ultimate weapon. It was translated as the Crystal, and is obtained in the Lunar Subterrane by defeating the Wyvern. In the GBA remake, he gets much better swords.

Final Fantasy V
The Ragnarok is the ultimate sword in this game. It is obtained by defeating Shinryu in the Cleft of Dimension.

Final Fantasy VI
The Ragnarok is one of the most powerful swords in this game. It is obtained by going to the Weapon Shop in Narshe in the World of Ruin, and having Locke pick the lock to enter. The Weapon Shop owner is hiding in the back room, and shows the party a stone, which is actually the Esper, Ragnarok. He offers to refine the Magicite and turn it into a sword, or leave it as the Magicite.

The sword has 255 Battle Power, and increases Vigor, Stamina, and Magic Power by 7. It also increases Speed by 3, Evade by 30%, and MBlock by 30%. Due to a bug in the game, the Evade bonus has no effect, and the MBlock bonus also affects physical attacks. The sword consumes 10 MP each turn to perform an automatic critical hit. It will randomly cast the Flare spell in addition to its attack. The sword can be used by Terra, Locke, Edgar, and Celes.

Betting the Ragnarok in the Colloseum gives the Illumina as a reward.

Final Fantasy VII
The Ragnarok is a sword that Cloud can equip. It is obtained by defeating the Proud Clod in Midgar.

Final Fantasy IX
The Ragnarok is a sword that Steiner can equip. The sword is found in a Chocograph. It teaches Thunder Slash and Shock.

Final Fantasy X
The Ragnarok is a sword that can be created by adding Triple AP, Triple Overdrive, and Overdrive > AP to one of Tidus' swords. The sword will be called Ragnarok, unless Break Damage Limit is added as well.

Final Fantasy XI
The Ragnarok is one of the best Great Swords in Final Fantasy XI. It is a Relic Weapon and must be highly quested, costing billions of gil and even years of playtime, in order for a player to ever obtain it.

Final Fantasy XII
The Ragnarok is a great sword, acquired by completing the Fishy Dreams hunt. It can only be equipped by characters with the "Greatsword 3" license.

Etymology
The Ragnarok is the predestined battle at the end of the world of Norse Mythology. At this time, Odin, king of the gods, will lead the gods and all the fallen soldiers out of Vallhalla to combat Loki followed by the Giants and other monsters. Both side shall destroy each other. A new world order shall arise afterward.