You go to Spirit Island (southwestern map in the middle of the triangle rock formation at the bottom of the map), and with ten gems, your sword will upgrade to the spirit of the ten courage gems you gathered.
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I don't know all of them but go on gamefaqs.com
You get them all over the world.
You Can't
I don't know! that's why i ask!!!!! I want the website maker answer me BACK! WHAT IS THE ANWSER I ASK!!!?? ZELDA PHANTOM HOURGLASS WHERE ARE ALL THE GEMS!!?
you cannot get ten faries in Zelda phantom hourglass. you CAN get ten gems to power up your fairy though.
get ten gems for each spirits and go to spirit island and you can switch spirits
Collect 10 or more Spirit gems and present them to the spirit on spirit island. For power, your sword is now powered with fire, for courage you can shoot shock waves out of your sword, and for wisdom your shield gets extra defense.
try checking on the internet they have helpfull answers (if you type the right thing in they should give you what you need type in to Google d.s legend of Zelda phantom hour glass where to find all the power gems hope that helped.im at that part and i don't know how 2 do that.
you need to get 10 power gems then you go to sprit island and talk to the water thing and click on power.Then you goto colletions and tap the spirt of power and there you go!
Not realy but you can upgrade it by getting wisdom gems and going to the spirit isle.
not as much cheats but glitches in most of the older games.