Love the Overseer/Reclaimer duo
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Checkmate
This would be brutal if you put a couple enchantments that either gave you life, took their life, or did both whenever a creature goes to the graveyard. Off the top of my head, a gravepact would add to this deck sooooooo much. You have an excellent start to something I would never want to play against. the mana costs might lag your deck in the first few rounds - but you can come back after a punches with this one.
For a suggestion: Try replacing the 4 archers with 2 jagged scar and 2 elvish champions. This is a mean deck, dude.