Bottomless Pit Bottomless Pit is going to be one of the best cards in this deck
The Phaeron ability allows you to create Necron Warrior tokens any time that one or more artifacts leaves your graveyard
It can also protect itself from sweepers and spot removal, which means it has uses against both aggro and control decks as a sort of Ravenous Chupacabra / Bristling Hydra hybrid
Cards like Hardened Scales shine with The Swarmlord, as well as cards that place counters on your creatures passively, like Arwen, Weaver of Hope and Renata, Called to the Hunt
Grave Titan, and Cruel Ultimatum were plenty of endgame, the ability to Mystical Teachings up a Punishing Fire was an absolutely crucial addition for being able to combat Faeries and grind out games that went long against even midrange decks, such as Doran
Core deck archetypes: Prison, Big Red, aggro, tokens, and counters