If you go to the Wizard City Housing Shop, you see that you enter a place named "Elik's Edge", but there is nothing there. I think you should make use of this place. Here is my story:
At level 90, you get a call from Merle Ambrose:
Ambrose: Thank you for arriving so quickly, [wizard name]. I'm afraid I'm in quite a panic after several wizards have gone missing near Elik's Edge. I'd like you to inspect the area and report back, [wizard name]. -you go to Elik's Edge Narrator: You see a massive hole in the ground. A loud voice yells, "DO NOT DISTURB ME". Ambrose: This is just as I feared. The dragon family has settled. You must deal with them. -you go to the cave and enter a large room with 5 doors, 1 of them is locked- (in each room is a dragon. here are the bosses)
Name: Fire Dragon School: Fire Health: 20,000 Cheat(s): Uses a randomly selected fire attack every 3 turns.
Name: Wind Dragon School: Storm Health: 15,000 Cheat(s): Uses spells when he doesn't have enough pips. Storm Lord and Leviathan do double the damage. No boosts.
Name: Ground Dragon School: Myth Health: 22,000 Cheat(s): Takes 1/2 damage from all attacks.
Name: Water Dragon School: Ice Health: 25,000 Cheat(s): Uses Tower Shield every round. Also, all Elemental Schools do 1/2 damage.
-after defeating all of these in whatever order, the 5th door unlocks- Dragon Queen: You dare disturb us?
Name: Dragon Queen Health: 35,000 School: Balance Cheat(s): Spells below rank 4 that you use give her one pip. Any single-hit spells regenerate her health by 5,000. -you defeat the Dragon Queen- Dragon King: My queen! You will suffer for this, wizard!
Name: Dragon King Health: 50,000 School: Death Cheat(s): Can't be stunned, and if you use a spell above 1,000 damage it fizzles and deals the damage to you. If you use a healing spell, he absorbs 90% of it.
-after defeating, you exit with the students you find in a locked room-
Ambrose: Good show, [wizard name]. I now know that you are the best wizard to call when a troubling day comes.