User:Average/Rise of Tiamat
This campaign is written wrong in the books. Look at that front cover. See that little wizard in the lower right-hand corner? Yeah, I think each of those heads is about... a level 100 and could take you out in one round.
So what's a person to do? Ditch all the clan-gathering and such and go with the dragon cult. Become a dragon whisperer, a dragon mage.
The Tower of Xochitl is not meant to be approached. That is the meaning of the hedges. They are a test. Only worthy PCs can get through as evidenced, perhaps, by the ability for a wizard to transport herself, for example, over the hedge because she's attained level 40. The tower is the representation of Isengaard in the LotR -- an abode and stronghold for a hyper-intelligent wizard.
If Tiamat rises, it will have a number of heads that is related to how wrong the world has gotten. The more wrong, the more heads -- up to 7.
Each head gets a round. So, choose wisely.... ;^>