EzekielRaiden
Follower of the Way
Then I think it would behoove you, before you even set out, to decide what mechanic or mechanics single out dragons from all other creatures. What do they specifically do or have which makes them special and different, such that, whether beetle, boulder, or butte, someone could quickly be confident that something is a dragon?I think they should have enough mechanically in common that they are all recognized as dragons from their behaviors
You'll want to pick either scaling stuff (so that a beetle could do it), or stuff clearly identifiable without strictly being powerful in itself.