So i have this idea about how the standard fantasy world would be different if goblins were more of a threat and what that could do to the world around them. I'd love to hear what other people think this might affect or story ideas that could come from such a world.
Clerics of Maglubiyet
The Goblin Clerics of Maglubiyet have hatched a dangerous plan to grant their god the covetted Fertility portfolio by stealing it from the Goblin Goddess Kikanuti. By pooling their resources and years of research they finally managed to complete a ritual that laid a racial curse on the goblin people.
This curse works in three parts. First it instigates a literal blood lust, the smell and taste of blood other than goblinoid acts as an powerful frenzy inducing addictive aphrodisiac. Second they are now supernaturally fertile, every coupling results in a pregnancy and the birthrate has changed from individual or twins born to actual litters of goblin young, sometimes even resulting in siblings born at the same time having different fathers. Finally the curse allows the goblins to breed true with any other species, with coupling's resulting in litters of new born goblins.
Newborns are literally born into a baptism of their mother's blood as most mothers perish in childbirth without the aide of a Cleric to provide healing and restoration to alleviate fatal complications. With the tremendous spike in birthrates the goblin population has exploded and armies can be bred and fielded within a few years. The clerics have used this to stage a coup d'etat and have taken over leadership of the Goblin clans. Now they are striking outward, tearing new territories away from their neighbors and laying waste to the countryside around them.
Not all of the clerics are in agreement as to their battle plans and splinter groups have broken off to form their own armies and territories from the newly taken lands. To make matters worse the curse didn't just target goblins, it has affected all creatures with the goblinoid type, though many have the difficulty of dealing with feeding and training their sudden surplus of children without the benefit of them reaching adulthood in a short period of time.