A huge moon, with a three-coned volcano which can be seen from the planet when it erupts and is taken for an omen. The planet, smaller than the moon, orbits it, and the planet in turn is orbited by a very small but very hot and bright ball of flame.

A demon that feeds on good feelings, causing those around to feel upset or angry all the time.

Stinging nettles with a deadly sting that kills within minites if the person who is stung cannot be healed.

Imagine a person wearing a cloak of invisibility flying a flying beast (e.g. winged horse, gryphon) which was also wearing a cloak of invisibility.

A potion that makes a person reveal their prejudices in public,however damaging it may be to them.

The gods hate mages. Upstarts who wield magic without reverence for the gods. So they refuse to allow their clerics to heal mages.

The dwarven gods true names can only be known by dwarves. They are referred to by nicknames in the presence of non-dwarves. I.E. Gudurran( Allfather) Baenna ( Hearthmother) Dudrak ( Ore), etc. No torture or magic or direct intent can reveal their true names to non-dwrves.

Just imagine a powder, that could make thing eatable (like swords or rocks).Try it an it will be verry funny.Just imagine..characters will need to get some information from someone. And if he will saw, as one PC is eating his sword.

Magic should have side effects, both expected and unexpected - fortuitous and deplorable. Expected side effects add anticipation, while unexpected ones increase the drama of the scene. The result can be comedic or dire, it dpends on which circumstances work best for your game.

Believable magic, like ordinary physicis, operates according to some invariable laws that always result in some kind of cost or "bounce back". The grater the magic, the more it should cost the character physically, emotionally, and spiritually.

village of the damned. A village of people that have been 'raised', from death by priests, too many times. At first glance the folk appear as any other, but upon closer examination, they are pale, drawn, and tired...

A master thief is struck by an insanity spell and thinks he is half cat. He walks around sniffing things, clawing the furniture and licking himself in the manner of a grooming cat. This is a major cause of embarassment to the guild and the master thief must be cured of his insanity.

Duck-Billed Bird-Dog. This creature has the hindquarters of a hunting dog such as a Labrador Retriever, and the forequarters of a duck, including webbed feet and a wide beak. It also has the wings of a duck.

A city is being plagued by a swarm of winged mice. The vermin can get anywhere, and they can easily avoid their normal predators by simply flying away from them.

A breed of small dog has the remarkable ability to talk, albeit in the repetitive manner of a parrot.

In one region of a forest, all of the trees are identical, down to the leaves and the twigs. If the PCs carve something into one of the trees, it could mystically propigate until it covered all of the trees, or could vanish since it was not carved into the one true tree.

Purple deer have begun to appear near the ruins of a fallen city, or other place of power. Hunting the deer is absurdly easy, as their coloration makes them easy to see. The heros prepare a feast from a freshly killed deer find out several hours later that the meat of the new purple deer is poisonous. This can range from cramps and vomiting to the truly sinister and lethal.

The Akhal-Teke is a real horse breed that develops a metallic golden coat. A more fantastic version could have a coat the color of pure gold, or silver making the horse appear to be made of the precious metal.

The Hierophant of Greenmarch is a lycanthrope. Rather than seeking a cure, or hiding his condition, he considers it a blessing from the Goddess of the moon, and requires that all of the Druids and loyal Rangers of Greenmarch to share in his gift.

While traversing the tractless deserts of Shezmu, the pc's come across a travelling caravan led by Vual, the Demon-Camel, the Lord of Lust, the Thrice-Humped...Vual is cursed to only be able to assume one form outside the Abyss, that of a rather large, golden-skinned three-humped camel,with a frog-like, black, barbed tongue......

Vual is the demonic manifestation of Lust...his followers, a cult of truly disturbed individuals, engage in bizarre orgies, travelling the desert towns, "entertaining" the desert folk with their perverse antics...

Vual's Rapture is what the cultists call their monthly festival, where they perform perverse rites to honor Vual...ofcourse folk come from great distances to witness the festivals, despite themselves, and the Cult of Vual welcomes all...

Surprisingly for such a hideous creature, Vual has the power to beguile and charm with his magical voice. His voice will always sound to pcs as the voice of the person they most desire...his followers also gain this ability slowly over time...

When the pc's meet with Vual, he tries to seduce them into joining his cult. If for whatever reason the pc's resist..well then... Vual would probably kill them for sport, as a lesson for those who "resist Vual's love"....