Notes, take out Jace, swamp Liliana for Increasing Ambition, swap Reality Spasm for Ponder, take out one Darksteel Plate for another swamp.
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This reminds me of my B/W infect strategy, on my profile if you're interested, which basically used control to get things through and buffed with dark favor and mighty leap, used phyrexian crusaders and angelic destiny. Nice build.
You need ways to get cards in the graveyard besides Increasing Confusion and the Skaabs. I would say swap Fog for Mulch, which will also help your mana. If you want the deck to perform better as well, you need more dual lands and you need to change the land ratio. I would do something like 4x woodland cemetery 2x drowned catacomb. You only need 1 black for the spider spawning, so with those you can probably just have one swamp to fetch with a viridian emissary, and then you have say 4 islands and 10 forests, because you have a LOT more green than blue. I'm also unsure that you need 22 land, although it is a slow deck and won't function without a lot of land. The sideboard should include typical anti-metagame, such as naturalize, crushing vines, mana leaks and natural end. I would say to reduce the card count to 60, but with self-mill it might be beneficial to have extra, especially if you happen to face a mill deck, which will make your own deck very powerful but will all but render your mill cards useless since using them could end the game very very fast and leave them dead weight.
I would change the Evolving Wilds to either Swamps or Woodland Cemeteries/Drowned Catacombs so that you have black mana to flashback the spider spawning, and if you're milling yourself flashback will be important. Also consider Laboratory Maniac as another win-con, where if you mill yourself out completely you win instead of losing, although doing that would require more intense milling and some kind of control to stay alive, maybe a sideboard option overall.
I play a deck like this, and I think it will be too difficult to get the creatures into your graveyard. I find having griffins in the graveyard to cast ruinators with means you're either very lucky or very late game. Try using Alchemist's Apprentice, which can sacrifice itself and draw a card, probably use it over Dream Twist, as it makes a good chump blocker by blocking and then sacrificing itself before damage is calculated.
Lightning Bolt's not standard anymore, and Think Twice is a good way to get draws and some flashback, especially if Burning Vengeance is out.