This is what i found for ALL (Spoiler Alert) Quests in the Planar Sphere.
I remind you again Spoilers ahead!!
The Planar Sphere
Talk to the Cowled Wizard in the main goverrnment building and agree to track Valygar. Complete this quest as normal (oh, and keep the Solamnic Knights alive). Once the Sphere quest is completely finished, go back inside and talk to the Knights. They want you to find them their way home (naturally), although the Planar Sphere is no longer capable of such an action. Then
the wizard Teos appears with an offer. He proposes an alliance between you and the Cowled Wizards. Accept. Then ask for his help in returning the Knights to their home and he refers you to Ribald at the Adventurer's Mart.
Event 1: Return the Solamnic Knights to their home. Go to the adventurer's mart and talk to Ribald there. For the price of 9000 gold he will send a mage out to your Sphere tomorrow. Exactly 24 hours later, the mage teleports herself directly into the room where the Knights are. Talk with her and send the Knights home. You get 45,000 exp and a Golden Girdle as reward.
Trick: There is a way to get experience for this one twice. After talking to her once, before she is completely teleported away, simply talk to her again. As many times as you can talk to her you get experience and a Girdle. (I managed three times before she vanished) Alternatively you can talk to Prelate Wessalan at the Radiant Heart and ask him to let the Knights live there. Tell the knights and you get 45,000 exp. Therefore the Mage is better, not only do you get a Girdle, but there's a chance for multiple experience!)
16 hours after getting the Sphere (give or take), Teos will appear in the Sphere with three apprentices for you to train, Morul, Larz and Nara. Teos leaves but promises to return several times over the next few weeks.
You now have to decide what to have your apprentices make:
Wand of the Apprenti: 1000 gold and 4 days
Dagger of <yourname>: 250 gold and 4 days
Ring of Protection: 2000 gold and 4 to 5 days
There is a random chance that they will fail to make whatever they are working on, no matter how easy. When they make the Ring of Protection, Larz gets vaporized (whether they succeed in making the ring or not). Note: You can tell if they are going to succeed in their tasks, if when they tell you how long it will take they say it will take a "few days". If they say "few days" then they will succeed, if they say "4 days" then they will fail. (this works for the other 2 choices as well)
Next they want to know which spell to transcribe:
Mislead: 250 gold and 4 days
Abi Dalzim's ...: 1000 gold and 4 to 5 days
Meteor Swarm: 2500 gold and 4 to 5 days
They will then give you a scroll of whichever spell you assigned. If learning Meteor Swarm, Nara will be exploded.
Finally there is one last artifact they want to try:
Robe of the Apprenti: 250 gold and 4 days
Ring of Wizardry: 3000 gold and 4 days
Staff of Power: 10000 gold and 4 days
Nothing (the only way they'll all live to graduate)
Whether these objects are completed depends on how many Apprenti have survived: the more, the better the odds. But still whether the objects are completed is random. The Robe of the Apprenti kills Larz. The Ring of Wizardry requires that all Apprenti be alive, and it will kill Nara and Larz to make it. The Staff of Power requires all Apprenti to be alive to make. (else it results in a bug while creating) Then it kills all three Apprenti, but you MAY get the Staff! (random chance and all) A day after killing them all, Teos returns to chide you (though he doesn't seem to care). If any of your Apprenti survived your training, then Teos will hold the Graduation Ceremony in the Sphere, about 5 minutes after appearing. If all survived, then Graduation happens, but is quite a bit more heartwarming. Funny too. For your trouble you get 50,000 exp. (you only get Exp if you kept them all alive, if only 2 survive you get nothing, if 1 survive you get nothing)
If Morul survives, he will return again after you complete the rest of the Stronghold as an Apprentice and every week he will make you potions.
Event 3 - Two days later a messenger tells you to return to the Sphere (therefore if you are IN the sphere after two days, you'll need to leave it). Return to the Sphere. Teos appears, but he seems to be as confused about this as you are. Soon it becomes clear that you have both been set up for an ambush as the messenger reappears with a lot of backup. Teos manages to hide during the battle, and reappears when you have won. This attack was precipitated by an anti-magic fanatic, Lord Argrim. Teos wants you to take him out, not kill, but remove him from existence with a Rune that he gives you. You can find Argrim in the Inn at the City Gates, upstairs. Have someone use the Rune on him (put it in the Quick Item slot), then kill his guards. Return to the Sphere and talk to Teos. Whether you killed Argrim or Mazed him makes no difference, you get 7500 experience either way. Then he tells you what happened to Imoen.
After that, Morul reappears and offers to join you as an apprentice again. He makes potions every week. There are four random sets of potions that he can give you, each has 5 potions in it: Set One: 2 Potions of Genius, Oil of Speed, Elixir of Health, Potion of Fire Resistance
Set Two: Empty Potion Bottle,Potion of Firebreath, Potion of Agility, Potion of Defense,Potion of Cold Resist
Set Three: Potion of Extra Healing, *Potion of Invulnerability, Potion of Insight, Potion of Perception, Potion of Master Thievery
Set Four: Potion of Genius, Potion of Regeneration, Potion of Stone Form, Potion of Frost Giant STR, Potion/Invulnerability
* Set Three's Potion of Invulnerability is Cursed
Note: If you killed Agrim in the final event, instead of imprisoning him, then Morul will NOT appear.
And that is that for the Mage Stronghold.
Full credit for this walkthrough goes to Dan Simpson
[This message has been edited by Daemion (edited 11-14-2000).]