If you're playing white/black I'm gonna recommend that you play Obzedat with Whip of Erebos. Obzedat's effect trumps whip exiling him, so he still exiles at end of turn but he always comes back at your next upkeep. Obze is pretty cheap and whip is dirt cheap so it shouldn't add too much to the cost. Also, 4 Nykthos is overkill imo. It's a legendary land, so you can only have one out at a time anyway so it's almost like you're playing 21 land right now instead of 24. If you're relying on it that much though I wouldn't drop to less than 2 of them, and 3 might not be terrible if you really need to get to it. You have plenty of lifelink to make Read the Bones worth it too, meaning you can sift through your deck more and need fewer copies of Nykthos.
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Any reason you're not playing Whip of Erebos for the Obzedat interaction? It's kinda good imo, if he's in your graveyard it brings him back and he still comes into play next upkeep for his ability after being exiled for trying to exile himself (that sounds really awkward, I know)
Oh yeah, that seems pretty good haha I actually made this deck list for a friend =P thanks, yeah I see how birds would help more, and I never use sphere as a 4 of anyway, thanks for the tips man