And Earth Eater at the Monster Arena is the only way to farm Fortune Spheres (at a rate of x1 drop each time you win). Earth Eater is unlocked after unlocking two other Arena Creation monsters. So go get collecting!
Where To Get Fortune Spheres
There’s only one place to get these spheres in bulk, and that’s from Earth Eater. This Monster Creation is a beast to fight, and drops only one Fortune Sphere per battle. You might find a few other Fortune Spheres here and there in the occasional chest, but those are few and far between. Earth Eater is essentially the only way to farm these bad boys. And it’s a fairly tough fight. Earth Eater has 1.3 million HP and can KO a character instantly with its Megaton Punch. Deal enough damage to it and you’ll knock it on its back, but even then, it’ll counterattack every hit with a Flare. The whole fight is a trial, to say the least. Even if you’re prepared for the constant KOs, the time that the fight takes can make farming a real chore.
Fortune Sphere Uses
The primary purpose of any named sphere is to unlock stuff on the Sphere Grid. Fortune Spheres wake up Luck Nodes, which increase – you guessed it – your luck. Luck is an exceptionally good stat in FFX, but more on that later. For other uses, you can also use Fortune Spheres in three of Rikku’s Mixes. Hero Drink (Ability Sphere + Fortune Sphere): Dramatically increases the critical hit rate of a party member. Miracle Drink (Arctic Wind + Fortune Sphere): Dramatically increases the critical hit rate of the whole party. Yay! Supernova (Dark Matter + Fortune Sphere): Deals large damage to all enemies.
Are Fortune Spheres Worth Farming?
Yes, but only if you’re going after 100% completion. Defeating the Dark Aeons and the ultimate superboss Penance just about requires your party having a high, if not maximum, luck stat. Luck in Final Fantasy X affects a character’s evasion, accuracy, critical hit chance, and how often enemies will hit them critically. And Luck scales these attributes much higher than the other corresponding stats, such as accuracy. Only a handful of enemies can hit a character with 255 Luck – and there’s nothing that that character can’t hit… and when they do, it’ll just about always be a crit. But farming Fortune Spheres is only half the battle when it comes to maxing your luck on every character. You’ll also need to chase Luck Spheres to add more into your sphere grid too. All that said, yes, Fortune Spheres are worth farming at any point in the game.