Devour For Power had maybe five cards that let you mill yourself, while Sultai Arisen has 14 at various spots on the curve: Hedron CrabHedron Crab Life from the LoamLife from the Loam Will of the SultaiWill of the Sultai There are 51 cards that mention the graveyard in some capacity, including these excellent grindy midgame pieces: Teval's JudgmentTeval's Judgment Diviner of MistDiviner of Mist Conduit of WorldsConduit of Worlds Kishla SkimmerKishla Skimmer Finally, you need your closers: Lord of ExtinctionLord of Extinction Afterlife from the LoamAfterlife from the Loam Colossal Grave-ReaverColossal Grave-Reaver The deck is just good, not-so-clean, fun with its constant churning of the yard for hijinks and value
Bruna is one to consider, and I also really like Heavenly Blademaster as a surprise attacker
Key Cards Cloud, Ex-SOLDIER Cloud, Ex-SOLDIER acts as both a target to put all your Equipment on, as well as draw power and ramp
It can also swipe at you with its paws in a slash, or bring a paw down vertically from above in a slam
having a ton of them laying around makes cards like Cyberdrive Awakener and Displaced Dinosaurs much scarier