>>96140405
>>96143480
>>96143488
Long-term planning. They dropped multiple species on a resource-poor environment, like Australia, cast rituals of fertility and dropped a bit of wild magic to maximize magic mutations.

Eventually some sort of ankylosaurus started eating iron and improving its armour. A century later, there were four-winged, dog-sized raptors with iron-reinforced teeth and claws that grew so fast they had to constantrly chew on rock and bone, and also reproduced like bunnies. It doesn't fly, but it can scale cliffs, jump, glide and even jump-glide.

Druids figured out what pheromones attract and repel them, formed biome enclaves and introduced both species on every continent, along with a magnetically sensitive bat that senses large amounts of ferromagnetic metals and whose droppings are excellent fertilizer.

I think you can imagine the chaos after a few centuries of this, plus the directions it might go. Even the pantheons might be weakened because most mortals now worship life, death and nature.

The remaining cities/towns probably turned into dystopian citadels with bronze-plated skeleton armies.