A Stone of Cold Fire, one that really
is magical this time, sounds pretty cool!
@Goldenwind 
What if Saurus Rock guards some great choas like evil and the teeth act as a relic to keep it at bay?
That would be interesting. It could be some sharptooth deity that likes to cause mayhem and chaos. 
Sounds like an interesting idea
What if the evil is Sharptoot, one who will cover The Great Valley in his gas and make all suffer the stink of ages.

Heh heh, the forum isn't going to forget that typo for a long time...

As for exactly what kind of trouble would result from the damage to Saurus Rock, I'm picturing stuff basically like the "bad luck" the dinosaurs experienced in VI, but on a more exaggerated/ridiculous scale...like just as someone tries to eat from a tree, a huge gust of wind blows all the leaves away at once, or it's impossible to get a drink from the watering hole without being pestered by sand creepers and/or snapping shells, or a sudden heat wave makes the mud pools start drying up while dinosaurs are sitting in them...am I on the right track? The mishaps could just keep growing larger in scale until the Gang of Five realizes they have to do something about it.