The first set are Bicycle Dragon Backs and are easily found online. The gold deck just came out this January. The second set is a deck of zombie-themed playing cards I came across online. You can find them on ebay or Amazon.com.
Personally, I think the Dragon Backs are very eye catching and very appropriate for any fantasy role-playing game. The dragon theme works well for Eberron specifically, too. It's only coincidental that the dragons' colors are red, blue, and gold — some of the colors of chromatic and metallic dragons in the D&D v3.5 Monster Manual as well as the respective colors of Eberron, Khyber, and Siberys shards.
And here are the cards I use for Life After Death.
The quality of these isn't nearly as good as the Bicycle decks, but they work well enough for Savage Worlds. I'm considering ordering a second deck just as a backup.