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The weapons and accessories you can purchase at shops inKingdom Hearts Final Mixget pretty pricey. While the boosted elemental defense and AP bonuses are appreciated, you’d need to rob the Cave of Wonders to afford it all. Luckily, there’s a much cheaper alternative for obtaining great items and equipment.
With Item Synthesis, you can get your hands on items, weapons, and accessories that can’t be found anywhere else. After synthesizing everything, you can even obtain Sora’s most powerful weapon. All you need to do is collect the right materials and a treasure trove of amazing items can be all yours.

How To Unlock The Item Work Shop
To Synthesize, you’ll need tounlock the Item Work Shop in Traverse Town.Open the entrance to the shop by interacting with theBlue Trinity Mark inside the Accessory Shop.You can start synthesizing bytalking with the Moogle by the fireplace.
You’ll be able to interact with Blue Trinity Mark’safter defeating the Guard Armor in Traverse Town.

Every Synthesis Recipe
Talking with the Item Work Shop Moogle will show you a list ofevery item you can currently synthesize.At first,only a few items will be availablefor synthesis. More items become availablethe more you synthesize.
Each item needs a certain number of materials before it can be crafted. Synthesis materials arefound within the red Prize Boxesdropped by Heartless.Every Heartless drops a specific materialthat can be used for synthesis.

Equip the Lucky Strike abilityto increase the odds of Heartless dropping rare items.
First Wave Of Recipes
The first wave of synthesis recipes isavailable upon entering the Item Work Shopfor the first time.
The tables below showseach item, the materials required, which Heartless drops each material, and where you can find each Heartless.

Unlocked in Fifth Wave of Recipes
Second Wave Of Recipes
The second wave of synthesis recipes is availableafter crafting three itemsfrom the first wave of recipes.
x2 Mythril

x5 Mythril
x3 Orichalcum

Synthesized item
Found in chests

Deep Jungle
Third Wave Of Recipes
The third wave of synthesis recipes is availableafter crafting nine items from the first and second waveof recipes. The itemscan be from a mix of wave one and wave two, as long as you have nine total.
x4 Mythril

Deep Jungle, Wonderland, Halloween Town, Monstro
Fourth Wave Of Recipes
The fourth wave of synthesis recipes is availableafter crafting 15 itemsfrom the first three waves. When you reach the fourth wave of recipes, the Moogle in the Item Work Shopwill reward you with the Encounter Plus ability.This abilitycauses Heartless to respawn after leaving the room and coming back, allowing you to farm more efficiently.
x5 Orichalcum
Monstro
Fifth Wave Of Recipes
The fifth wave of synthesis recipes is availableafter crafting 21 itemsfrom the first four waves.
x1 Gale
End of the World
x2 Gale
x1 Dark matter
x8 Orichalcum
Atlantica, Deep Jungle
Final Wave Of Recipes
The final wave of synthesis recipes isavailable after crafting all 30 itemsfrom the first three waves. The Ultima Weapon isSora’s strongest weapon.The Ultima Weapon’s MP is onlyoutclassed by the Diamond Dust Keyblade.