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This deck is a clone of sliver edh by zakcheese1. http://www.mtgvault.com/zakcheese1/decks/sliver-edh/
land fixinig shouldn't be a problem - get a sliver down turn one/ two - then slowly build up the hive, with the overlord it simply allows you to choose what abilities you want late game (shroud then indestructible) then swing with hundreds of potentially unblockable damage
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