*cough* relentless rats. It's a fun card :)
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I made a deck with the same concept, trust me, lessen the amount of spells, add some creatures, people will get smart to this concept fast, it ends badly, token creatures make great cannon fodder, other than that, focus more on the draw/discard/damage.
Holy...Penguin...I would like to congratulate you for scaring the crap out of me. But, might i suggest some of the Lorwynn "Vivid" Lands? They may help. (E.G. Vivid Grove)
Consider some "Vivid" Lands, from the Lorwynn set, it'll help your mana production.
Consider the card "Notorious Throng"
But Suggestions? I feel it needs something else, that's why I only put 54 cards in.