Biran and Yenke. The preparation for this is a whole ordeal, but it involves Kimahri having the Steal and Luck abilities. And once you've gone as far as the Luck ability on Rikku's path, you might as well stay on it, there are quite a few Agility+ nodes on her path. Then, you need the 30 Pendulums from the chocobo race at Remiem Temple. Make a Master Thief armor (I think it's armor) for Kimahri. Then, when you fight Biran and Yenke, cast Haste (you'll have the Use ability, so use a Chocobo Feather), cast Luck five times, and start stealing. Steal from each of them four times successfully, and you Steal instead of Mug because you'll do it so much that you might defeat them before you steal four times. You'll net 16 Lv.3 Key Spheres, which is the earliest you can get them from an enemy. Plus the one you get from the Chocobo Trainer before this fight, that's 17, and there are 17 Lv.3 locks (on the standard sphere grid at least, adjust for the advanced one).Originally Posted by gabrielo2580