Oazduke's Vengeful Head.
The head haunts all headsman and executioners.
A floating, bloody head, long separated from its body, is a particular legend among a very particular group of people, executioners, specifically those that chop heads from a block for a living. It was that infamous highway robber, Oazduke the Vengeful, who when finally captured and put to the axe, screamed his foul hex, seconds before his head flew off.
"You will know it is me when I'm through
A curse on your ilk and on you!
May my severed head haunt you eternal
Frightening you headsmen infernal!"
Years later, not one but two(!) weary, puffy-eyed, spooked, headsmen, haunted day and night by Oazduke's insufferable severed head, approach the party cleric in order to hire him to exorcise the ghost head once and for all.
A PC Conjurer or summoner, basically any mage whose sole purpose in life is summoning creatures to aid in battles and various situations, is cursed with a hex, and needs to find a way to undo the curse...before he goes mad, or his fellow PCs throw him out of the party, or worse.
Everything he/she summons, never goes away. So you'll have to figure out what the heck to do with that dire bear or fire elemental once it's done fighting the orcs for you. Eventually a caravan of bizarre creatures either annoyingly ends up following the summoner around, or they go off to cause mayhem elsewhere. Bad news for the poor spell-caster regardless.
One day a a wind begins to blow out of the West. The next day it gets stronger. And stronger still the next few days. Eventually (and fortunately), the speed of the wind tops out at a steady fifty miles an hour, but continues to blow. Soon an entire kingdom is wondering why it's not abating. The weather mages deem it unnatural but can't seem to banish or control it. The priests of various faiths claim it's divine. The End-Of-Days crowd is having a field day with their predictions of doom. No one knows why the gale persists. When inquiring with neighboring kingdoms, it seems they too suffer from a persistent western mistral. Eventually the populace begins to adapt to living with a twenty four hour a day wind. Always from the West, and perpetual. What could be causing this? A raging Elemental king? a curse from the gods? an unearthed artifact? Or has Nature itself gone haywire?
When the characters approach a clearing in the forest, they will see 4 ogres who are guarding, and preventing from escape, 4 human males, and 3 human females. The ogres will see the party and leap to attack. The females will scream "OUR SAVIORS!!" and run screaming straight across the currently forming battlefield, in between ogres and party members, to hide behind the rearmost party members. They will be safe there. The males will try to skirt the battle to the north side to join the women.
To the south, giants will be hiding in the thick underbrush until the party has engaged the ogres and then attack the most opportune target EXCEPT the ones that the females are next to.
It should be noted that the female commoners are not female commoners at all, nor are the male commoners actually male commoners. The female commoners are the hags, who have polymorphed themselves as the commoners in their stewpot to escape detection. The males skirting the battle are actually MORE ogres, the hags were in the process of polymorphing ALL the ogres into regular humans for ambush purposes. The REAL commoners are already dead, having found their way into the coven's cauldron for dinner.
The hags (the women) will position themselves near to any spellcasters in the rear first, and then near anyone else in the back of the fight. The ogres (the men) will wait until the hags shift form, and then attack first the rear folks, then shift into the melee.
It is possible that the characters, as they approach the ogres, will notice the giants in the bush, and be able to warn the others of the ambush.
GAME NOTES: If you sell the screaming women correctly, they will not even be suspected until it is too late. Therein lay the problem. This encounter is ESPECIALLY deadly to the rear eschelon of the party. It is entirely possible that the hags will finish off half the party before they even realize they have been duped. Caution is required if the game master wishes to avoid a TPK(total party kill).