Ok, they decided to continue to explore a little and encounter Shebeleth who told them they were too late. They fought him but took a serious beating because they were low on spells. So they fled to rest. Now it's too late and the portal opened. They decided to use the wish to make it close. I think it's really above the guidelines of the spell, so I send the wisher into the future (and just him), when the portal has been finally closed by some epic adventurers. The player understood quickly he was sent in time, and want to try to come back. I told him it is going to be very difficult. He plans on tracking Celeste, hoping that she can do something, and since he saved her, he hopes she will try.
Since Celeste is a servant of Tenser according to the Age of Worms AP, I think it might be possible for a such mighty wizard to send him back in time.
What do you think ? Should it be possible ? Does a wish should be enough of more ? Another thing to do ? Ideas ?
Thanks in advance.
Oh and by the way, since the wish is available only to a character with the smoking eye template, he was the only one of course to have it. So to release Adimarchus in Asylum to fight him for good, it's going to be problematic.