Items required
Malboro Tentacle - 2
Sharp Spike - 4
Energy Crystal - 4
Cost
800 Gil
Damage Increase
+25 to base Str value
Where to find the items
Malboro Tentacle
Mug or defeat Malboros which are in Grandidi Forest, the Island Closest to Heaven or the Island Closest to Hell
Sharp Spike
Mug Grand Mantis monsters near Edea's House
Energy Crsytal
Energy Crsytals are hard to come by. To get them, fight Elnoyles, Behemoths or Ruby Dragons (high level)
Monsters -
Elnoyles: Must be at least level 40 to get 2 Energy Crystals
Behemoths: Must be around level 20 for 2 ECs or around level 30 for 3 ECs
Ruby Dragons: Must be high level to get ECs
Where to find the monsters -
Elnoyles: Lunatic Pandora, Esthar, Deep Sea Research Center
Behemoths: Tear's Point, Esthar, Deep Sea Research Center
Ruby Dragons: Island Closest to Hell, Deep Sea Research Center
Good Luck!