Yeah, obsidian dragons love to hide among the obsidian towers. I've added another dragon and removed an aether tower - a bit faster and everyone can see the dragon now. 
First post updated.
Yay! I found it! I will not let it out of my site *glares... eyes get tired... falls asleep*
but seriously now, seems like it should be fun, lol. I might have to try it sometime If I ever figure out what to do with 60+k Electrum