Well, I've been seeing a lot of people complaining that Rainbow decks were too strong, too overpowered. Bah. I decided to go out and not only design a deck that could defeat MOST Rainbow decks that I've tested it against (quite a few), but it is also a viable PvP deck (Fake Gods will slaughter it, so don't bother). I have two different builds for the same deck, based on different playing styles.
Deck 1
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This verson of the deck has less Permanent control, and more creature control.
Deck 2
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This one has more Permanent control, but less creature control. It also has an extra attacker, the Lava Golem, which is optional.
The point of these decks is to deny pillars/towers and support Permanents, such as Empathic Bond, Sundial, Hourglass, Boneyard, weapons, and shields as early as possible. A good tip is to steal a Quantum Pillar/Tower early game before using an Earthquake/Quicksand, so you can have early protection against Devourers. The ONLY shield that is a threat is Bone Wall, but with it's high cost, it's not likely to appear unless they're running Entropy Mark and Supernovas. >.>
I've play-tested both, and they both work fine. I never once had a pillar problem, and the only game I came close to losing was against FFQ because I was still using an older prototype.
Comments and suggestions are welcomed. I'm not sure how well it works when not upgraded, but I do know that upgrading the dragons is optional. The reason I upgraded them, however, was that I thought their increase in stats from the upgrade outweighed the cost increase. Oh, and probably the most important aspect of this deck is that it's very fun to play. It's so satisfying to sit there with a bunch of pillars while you're opponents have none. =D