"For those confused by the land (fetches produce the land they fetch):" <--- New rule I'm unaware of? Or could you clarify exactly what you mean by "13 R Producing 9 U 10 B 12 W" What basic land count are you running specifically?
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6 colorless to cast, 5 colorless to activate tap ability. That'd only (almost) be worth the cost after the first already lethal archive trap, traumatize, etc. had been cast. Interesting suggestion though, just can't see justifying the mana cost.