Hmm, looks like it will be an interesting set for sure. I like some of the new Deltas, yet this set also (for me) has the worst artwork yet.
About the Holon Egg card thing... From the picture, it looks the same as 'Fossil Egg' from Discovery yet may only search for holon's Omanyte and Kabuto (maybe Aerodactyl too).
Im very interested in the Delta Rainbow energy and the new Candy (maybe they changed the Candy text?). I just hope the Delta Rainbow energy doesnt turn out disappointing.