Here are some stat blocks for unusual (homebrew) creatures you may find in the Council Lands

There are many special materials that can create unique items.

Spellstone is a quartz-like crystal that can store aether. It comes in various forms, depending on the source and the levels of refinement. Charging a spellstone consumes a spell slot--the more powerful the slot the greater the effect. When a spellstone is used, it crumbles to dust.

Item Creation

Although magical items are rare, there are many special materials that can be used to create items. With the appropriate proficiencies player characters can help in the creation of expensive items or create simpler items themselves. The following are rules for crafting.

These are the changes I usually make when DM'ing. Other than the racial restrictions these are not setting specific.