Check out zealous persecution, helps when you're doing tokens
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to be able to hit without being blocked, check out silhana, ledge walker and treetop scout. Both are cheap to get out and are awesome when you put a wirewood pride or rancor on them.
Nice deck, you should take out the leyline of the void since it removes graveyards from the game and you play off of graveyards. Thats unless you play solely off your own graveyard, which still works.
With exhume, since another creature is put into play under your opponent, you want some advantage on creatures, try a Reya, she at worst is a target for some removal as you bring out the rest.
I like it, how has it play'd out so far?