But the wizard is using magic to fly a supernatural thing. If you want to give your fighter the ability fly the do so for your game and I think a wuxia supplement would be a great idea for people who want that kind of playstyle but it is a limiting play style and not one suitable for all DnD games so it should not be the standard.
Aww the old this why the wizard is a god because he do ll these things yet all these things assume that the player playing the wizard is dictating the entire game and the DM and the other people at the table have nothing to say about it.
First of all the encounter with the dragon and wizard happened on the way to a set of cairns where the party was going to retrieve a needed magic item. So if there was a wizard there was no way he could just pop home and summon an efferti
Second you can't force the efferti to give you the wishes you need to negotiate and maybe roll a diplomacy and since diplomacy is not a class skill for the wizard nor is charisma a main stat for a wizard good luck on that.
So to take on the wizard vampire and the dragon the wizard needs to be lawful evil and have time to prepare all these things.
So tell me what does a lawful good wizard do is attacked by the dragon and the vampire while he is out in the wilderness?
What does said wizard do if he is out of spells and runs into these duo?
The fighter does not get to summon creatures but he is eleventh level why can't he have an item that lets him fly which he activates and using his strong BAB, feats, hit points and weapons gets in the air and takes on the dragon.
Sure he is going to be hard pressed to handle both but then so is the wizard who didn't know and have time to plan a head for this encounter.
The best way to handle this encounter is with a team working together to take down the bad guys.
Well, let's see now...
Wizards can cast teleport. So he can go home.
If the wizard wins the charisma check against the efreet, he can make the efreeti do whatever the hell he wants to. So if he cast's eagle's splendor that's +2 right there. Heroism for another +2. +4 to his charisma roll. The efreet has +2, so we're already ahead. If we want we can dumpster dive for even more charisma/check bonuses. The wizard is also offering the efreet 2 wishes, which should be worth something.
SRD said:
You can attempt to compel the creature to perform a service by describing the service and perhaps offering some sort of reward. You make a Charisma check opposed by the creature’s Charisma check. The check is assigned a bonus of +0 to +6 based on the nature of the service and the reward. If the creature wins the opposed check, it refuses service.
So no, you don't need diplomacy at all.
As for the fighter's supposed assets...the wizard can dispel the flight item and the dragon and wizard can play "strafe the moron." And, quite frankly, the feats and hit dice probably are not up to the task of meleeing a dragon - a creature with more and better hit dice, a higher BAB, more feats than a creature of it's CR and enough spellcasting to cast "fighter-be-gone" spells like mirror image. This is also assuming the vampire decides not to exploit the fighter's crappy will save with his dominate attack.
I would also like to point out that creatures of any alignment can activate the gate portion of a candle of invocation, so a Lawful Good wizard can pull this off too. So, to answer your question, he teleports home and prepares. Or, if he has spells, he breaks out the shivering touch and disintegrates and tells the encounter to go away.
Your question of "what if the wizard is out of spells for the day" is the same as "what if the fighter is down to 3 hit points." If you are out of resources you're screwed regardless of class. Although the wizard is probably hiding in a rope trick at that point. But hey, we can watch the lone fighter die.
And while you're correct that a team would be better to handle the encounter, a better team would be druid, cleric, wizard, and psion. Either the cleric or druid can handle front-line combat better than a fighter via self-buffing. And of course, casters get real defenses like miss chances and they can crank their AC higher.
Sure the DM can change any of this...but that doesn't mean the rules are fair.