The fact that All Is Dust forces everyone to sacrifice stuff gets around all kinds of protection like hexproof, and this is a key card for any Eldrazi-focused deck
The four Duskmourn: House of Horror commander decks revealed for Magic: The Gathering's newest set M:TG's horror-themed deck Duskmourn has three final girl (and boy) commanders, and one horrific villain
4 Gaea's Cradle The Best Land For Creature Decks Gaea's Cradle is one of the best lands ever printed, and if you're playing a creature deck, you want it inside of it (assuming you can afford it since it is a Reserved List card)
Notably, the returned Rats don't need to be among the cards you milled, so if a powerful Rat gets removed, Ashcoat can easily get it back so long as you don't mind milling four cards (and that effect can play into graveyard synergies too)
It's also an artifact for things like affinity for artifacts or improvise or convoke to tap for mana or pumping up a Cranial Plating or searching up with Trinket Mage or Tezzeret the Seeker
Loot, the Pathfinder Loot, the Pathfinder is a triple-threat attacker with double strike, vigilance, and haste, plus three powerful exhaust abilities for mana, card draw, and damage