I got an Emerald dragon after only 6 tries. I have tried for Pearl like 20 times now and still no luck - sooo frustrating. I decided to take a break and go for a Panlong so I tried Blazing / Mud in the EBS and Fog / Lava in the EBC. Got a 8 hour on the EBS and got a dreaded 10 hour lava on the EBC. (banging head against wall). At least I paid $12 to get some gems and upgraded both caves finally. I will go back to the Pearl hunt as soon as worthless lava and the other 8 hour are done. Hopefully changing things up a bit will bring me some luck!