I have tried variations of this deck for fun. It works well enough against AI3. Usually I don't use the ice shields or the shockwaves, but a couple of icebolts. If the enemy is slow, (for example some top 50 decks) you just save up 150-200 water quants and completely tank the opponent without even moving in a creature.
You can also use 5 bone pillars, 12-13 sapphire pillars, 5 Chrysaora's, 5 toadfish, 3 squids. The squids and the toadfish completely blow away creature rushes. The chrysaoras, who only need tiny bits of water and have their own poison supply, tear away at the enemy HP without being bothered by shields.
Either way the ideas are about the same and the results differ little.