The staff only stops time and symbolizes your position. Just cast the spell at a wall, and you'll have a portal to return to the Shivering Isles! Speaking of which, why haven't you gone back home yet?
You might... I just hope the game has a good storyline. I would really like some things to not be so obvious, like the Ocean King being that old man in Phantom Hourglass. As soon as he said to Linebeck that it wasn't the right time to say who he truly was, I knew he was the Ocean King.
Did it? How so?