The Growth Egg is a reward for completing Mission 55 for the first time, and you can start this mission as soon as you defeat the boss at Oerba Village. The best thing about this accessory is that it doubles the amount of CP you acquire after a battle, which makes filling out the Crystarium a little bit easier. The battle for Mission 55 is quite tough if you do as soon as possible, but there is an easier way to win this battle, which is with Vanille and her unique spell, Death. Not only do you have to contend with Neochu, but also 5 Picochus from the offset. The ideal party for this battle is Vanille (for obvious reasons), Snow (for tank purposes) and Lightning (she's a decent healer, and doesn't have to worry about her HP). Equip Snow with two Black Belts and one Royal Armlet (all maxed out). Equip Vanille with Sprint Shoes, Royal Armlet and a Sorcerer's Mark. Equip Lightning with a Sorcerer's Mark, Warrior's Wristband and Sprint Shoes. With Vanille/Lightning/Snow as your party, here is the ideal Paradigms to use. 1) Saboteur/Medic/Sentinel 2) Medic/Medic/Sentinel 3) Medic/Commando/Sentinel 4) Ravager/Commando/Sentinel 5) Ravager/Commando/Commando The first stage of the battle (start with #1) involves getting Death to land on Neochu as soon as possible (if Vanille dies early, retry). You should be fine until Neochu does Screech, which is probably when all hell will break loose; it will use Screech right around when your Haste from the Sprint Shoes wears off. You will most likely have to retry the battle a few times, maybe even more, until you get Death to land before hell breaks loose. Once you get Death to land on Neochu, the plan is to stay alive, while taking out the Picochus. Heal up with #2, then go with #3 to start whittling down the Picochus' HP (which is a whopping 260,000 each). Once you finally take out one or two Picochus, switch to #4 to get some more damage output, going back to #2 or 3 if you need healing. With only one left, you can switch to #5 to put it in its place and win the battle.