To turn invisible you must go to the ruins (look at your map). Be sure to have the crystal
with you. (I forgot :P)
Transform into a wizard and out "incantation"-"see"-"no".
Walk around the ruins (as in a whole circle)
>>>
^ v
^ v
<<<

Then you should be infront of the ruins. Then go to your inventory and hold out the
crystal.
*
This will last until you have saved, or until you transform back.

WARNING! You may not be able to talk to anyone.
They'd just think it was the wind that blew by them

THEY HAVE NO CLUE!!!

whish i knew

you can get a crystal by regitering fish or bugs

I DONT KNOW

you go to lovers point then ride the taxi broom to the island. there will be a pirate dude
there and he will make a deal with you if you win you get a crystal if you lose he gets
something of yours. also this only works in some games ive found out so it may not
nessasarly work