@moorebrother1 The deck looks neat. Using multicolor lands instead of basics could be advantageous since there's a lot of artifact mana. I like that there's a theme to the deck as well. I'm excited to try this out.
@rat3de There might be a cool Doomsday deck in those ideas.
I tried using PO with Doomsday (thanks to Gush restriction) but every iteration felt like regular PO storm with extra and unnecessary steps. Usually, by the time you could cast Doomsday, you could instead get a lot of storm and win. Using Doomsday also entails having cards in the main deck that don't synergize much with PO, like Dark Ritual. Four Mox Opals might be able to replace it though. One could even take the black splash further and add Mind Twist. I feel like Mind Twist could be amazing with both PO and Doomsday.
Perhaps using Burning Wish like the Legacy build to reduce clutter in the main deck could be good. A light red splash could be beneficial in other ways, like allowing access to the usual red cards, and maybe even Blood Moon (since PO relies so much on artifact mana).