That tends to be green decks, but this equipment fetches any basic lands, so it works with any color identity
But any cube player will tell you that the best way to use Recurring Nightmare was not as a reanimate but as an infinite value engine

A Trail of Teacups Aberrant Researcher Acolyte of Affliction Admiral Brass, Unsinkable Advanced Reconstruction Aftermath Analyst Ainok Wayfarer Airlift Chaplain Altar of the Wretched Angel of Suffering Another Chance Anowon, the Ruin Thief Argoth, Sanctum of Nature Ark of Hunger Armored Skaab Ashcoat of the Shadow Swarm Ashcoat of the Shadow Swarm Atrocious Experiment Autumnal Gloom Avatar Destiny Aven Heartstabber Awaken the Honored Dead Ballad of the Black Flag Bane-Marked Leonin Barrowgoyf Belltower Sphinx Beluna Grandsquall Beluna Grandsquall Billowing Shriekmass Black Widow, Daring Operative Blanchwood Prowler Blight Titan Blood Spatter Analysis Bloodcurdler Blossoming Tortoise Bramble Familiar Bramble Familiar Bristlebud Farmer Bruvac the Grandiloquent Burrowing Razormaw Cache Grab Carrion Cruiser Carrion Grub Cauldron's Gift Cemetery Tampering Cephalid Aristocrat Cephalid Illusionist Cephalid Vandal Chains of Mephistopheles Charmed Pendant Circle of the Land Druid Cloudhoof Kirin Colossal Badger Colossal Badger Colossal Grave-Reaver Combustible Gearhulk Convergence of Dominion Coral Colony Corpse Churn Court of Cunning Covetous Castaway Crawling Infestation Crawling Sensation Crop Sigil Crow of Dark Tidings Daggerfang Duo Dakmor Salvage Darkblast Dawnhand Eulogist Deadbridge Chant Death's Oasis Deathbonnet Sprout

Psychic Corrosion Psychic Corrosion mills plenty of cards over the course of a game
By simply paying one more black mana (totaling four mana), you get two Darkstar Augurs
Not only are we getting an additional Crucible with Walk-In Closet, we get a variant of Yawgmoths Will with Forgotten Cellar