The spirit of a creature trapped in amber cannot escape to it’s afterlife / next incarnation / whatever.
Such trapped spirits can be contacted by those who know the right rituals and magical power derived from them – typically the power to control one individual of that species.
Can by quite powerful if the creature is a colony insect (ant, bee, wasp, etc) – simply control the queen and you command the whole colony.
Real world scientists have accidentally opened a tear in the fabric of reality, transporting their laboratory into the game world. Unable to repair and/or refuel their equipment in this (to their minds) primitive world they are now trapped.
The local band of 'nasties' (goblins / orcs / whatever) lives in relative peace with the local population.
Along come the PCs and go through their usual heroic monster bashing routine, wiping out the nasties and pinching all their stuff, then continue on their way.
Problem is, they don't kill ALL he nasties. The survivors want revenge and, after spending a few months recovering, start to take it in their own inimitable style (which is not unlike that of the PCs come to think of it).
Next time the PCs are in the area they find themselves VERY unpopular with the townsfolk.
A plague has hit the local area.
In humans it affects only the most vulnerable, the children and the very old, and even than it's little more than a summer cold. 24 hours of sniffles and then it's gone, barely noticeable really.
To sheep however it is fatal and the whole economy of the area is in serious trouble. If this keeps up the area could well be facing famine.
Somebody (enter the PCs) must find the rare herbs needed to make a cure.
Tämbourine is firmly placed on my back ,to unsheathe this sword I simply have to say "re clouse" meaning come to me or i can just reach over and unsheathe it the old fashioned way. This sword was created to my liking tambourine is made of raw-like metals I found in different regions as I begun to forge the metals together, I’ve noticed that the raw metal materials were different pieces to a wide variety of swords that were used the past and present, being so most blades have a sheer grey texture Tambourine’s blade became black as the depths of the oceans. The blade expands to 6” which weighs 426lbs the sapphire jewel placed on the tip of hilt (upper middle center of the base) it emits a aura texture of purple which weighs 24lbs the jewel is un-breakable it negates magic for tambourine has a mind of its own only belonging to me it finds a worthy opponents who doesn’t use magic or any type of power to their liking which I can agree with(who would want an opponent that abuses their powers to kill for no reason or to avoid dying by honor tambourine fights with honor and accepts its glory or defeat) I’ve named the sapphire Sophia because not only that its rare and radiant it resembles my burning passion for my love Sophia. I made the hilt to be a length of 15 inches its frame is created with fine katchin (very thick and heavy metal) it alone weighs 50 pounds its texture is black like mixture of, I made it to be a cruciform hilt so it has room for two hands. I I made the blades hilt aprox. 2”, the blade is double-edged but the left side of the swords frame can block and or negate ones attack if needed, it weights 500lbs making it nearly unmovable. To go up against this sword is to quickly find your own death. Tambourine is a twin sword to Terra.