D&D One Shot

The characters are evil lizardfolk who must win a race of flying carpets. A character is undead.
It is at an enchanted planar fortress which borders the Feywild.
There are a family of kobolds scavenging what they can. And a sadistic aristocrat wants to investigate the curse of a talking bottle.
At some point a monster escapes.
As the adventure progresses there is a series of murders

The PCs are brave sages who must recover a fey horse. A character is undead. It might involve labourers.
There is a helpful politician who has important information for them.
The characters start in a fight. Early on they encounter a thieving NPC. If things get stuck one of their allies tries to leave.
At the end there is a reward of a favorable marriage.

The PCs are egotistical monster hunters who must defend a hidden woods in the Feywild. One or more characters have cursed magic items. It might involve elders.
There is a shapechanging merchant who turns out to be the villain.
The characters start running away from something. At some point they encounter lots of vermin. If things slow down there is a fire.
At the end there is a reward of a relic.

The characters are emotional sages who must defend a magnificent golem factory. One or more characters are dressed in costumes.
It is at a magnificent lake which is near to a mordenkainen's magnificent mansion.
There are a group of hungry berserkers infected with a disease. And an undead witch seeks to negotiate with a honorable sea cave.
At some point a friendly animal leads them in the right direction.
As the adventure progresses there is a series of murders

The PCs are fiendish lizardfolk who must destroy a holy weapon. The mood might be... manic
There is a shapechanging fighter who wants to do the same thing.
The characters start at the scene of a murder. Early on there is a local festival. If things get stuck an animal messenger arrives.
It finishes with a reward of the key to a planar portal.