20
get ten gems for each spirits and go to spirit island and you can switch spirits
You Can't
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.
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!!?
I don't know all of them but go on gamefaqs.com
you cannot get ten faries in Zelda phantom hourglass. you CAN get ten gems to power up your fairy though.
Not realy but you can upgrade it by getting wisdom gems and going to the spirit isle.
You don't 'pass' Spirit Island. Spirit Island is just an island where you take your Spirit Gems to get your spirit upgraded to the next level so you can power up your sword. It has no absolute affect to the main plot of the game.
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.
Collect 10 Power Gems, then return to Spirit Island in the far southwestern sea and power up the Spirit of Power. Do this again when you find 20 Power Gems.
You get them all over the world.