Nightmare

Commanders

Braids, Arisen NightmareBraids, Arisen Nightmare card image (dmu) 84 #r338
Brokkos, Apex of ForeverBrokkos, Apex of Forever card image (iko) 378 #r5998
Falthis, Shadowcat FamiliarFalthis, Shadowcat Familiar card image (cmr) 564 #r4895
Lurrus of the Dream-DenLurrus of the Dream-Den card image (iko) 226 #r2111
Nethroi, Apex of DeathNethroi, Apex of Death card image (iko) 380 #r3939
Otrimi, the Ever-PlayfulOtrimi, the Ever-Playful card image (c20) 12 #r6890
Ovika, Enigma GoliathOvika, Enigma Goliath card image (one) 474 #r2929
Silvar, Devourer of the FreeSilvar, Devourer of the Free card image (c20) 15 #r9341
Snapdax, Apex of the HuntSnapdax, Apex of the Hunt card image (iko) 381 #r9233
Tayam, Luminous EnigmaTayam, Luminous Enigma card image (c20) 16 #r7487
Umbris, Fear ManifestUmbris, Fear Manifest card image (voc) 76 #r5791
Zaxara, the ExemplaryZaxara, the Exemplary card image (c20) 20 #r4147

Changeling Commanders

Mistform UltimusMistform Ultimus card image (lgn) 47 #r16698 (changeling)
Moritte of the FrostMoritte of the Frost card image (khm) 328 #r4015 (changeling)
Morophon, the BoundlessMorophon, the Boundless card image (mh1) 1 #r1667 (changeling)

Other Creatures

Angel of SufferingAngel of Suffering card image (snc) 67 #r3949
Ashiok's ReaperAshiok's Reaper card image (woe) 79 #r6794
Ashiok's SkulkerAshiok's Skulker card image (war) 40 #r23063
BanehoundBanehound card image (war) 77 #r7793
Boneyard LurkerBoneyard Lurker card image (iko) 298 #r5078
Carnival HellsteedCarnival Hellsteed card image (prtr) 147★ #r18228
Cavern WhispererCavern Whisperer card image (iko) 79 #r6662
Chittering HarvesterChittering Harvester card image (iko) 80 #r5893
Cruel Somnophage // Can't Wake UpCruel Somnophage // Can't Wake Up card image (woe) 286 #r5871
Devourer of MemoryDevourer of Memory card image (thb) 213 #r17126
Doom WhispererDoom Whisperer card image (grn) 69 #r2076
Dread PresenceDread Presence card image (m20) 96 #r1761
Dream EaterDream Eater card image (grn) 38 #r7411
Faceless ButcherFaceless Butcher card image (tor) 60 #r12243
Faceless DevourerFaceless Devourer card image (tsp) 108 #r19212
Fiend ArtisanFiend Artisan card image (iko) 220 #r2640
Foul WatcherFoul Watcher card image (mh2) 43 #r16656
Gibbering BarricadeGibbering Barricade card image (dmu) 95 #r14564
Gloom PangolinGloom Pangolin card image (iko) 89 #r20766
Gloomfang MaulerGloomfang Mauler card image (mom) 108 #r13972
GravegougerGravegouger card image (tor) 62 #r23014
GrimdancerGrimdancer card image (iko) 90 #r11301
Haunt of the Dead MarshesHaunt of the Dead Marshes card image (ltr) 90 #r9377
Helica GliderHelica Glider card image (iko) 15 #r20504
Hell MongrelHell Mongrel card image (mh2) 88 #r9601
Hunted NightmareHunted Nightmare card image (iko) 322 #r17297
HypnoxHypnox card image (tor) 64 #r16237
Insatiable HemophageInsatiable Hemophage card image (iko) 93 #r6042
Labyrinth RaptorLabyrinth Raptor card image (iko) 339 #r10285
Laquatus's ChampionLaquatus's Champion card image (tor) 67 #r20538
Leyline ProwlerLeyline Prowler card image (war) 202 #r3570
Mesmeric FiendMesmeric Fiend card image (tor) 69 #r14088
MindleecherMindleecher card image (c20) 44 #r6902
NecropantherNecropanther card image (iko) 302 #r8274
NightmareNightmare card image (lea) 118 #r11508
PetradonPetradon card image (tor) 108 #r25235
PetravarkPetravark card image (tor) 109 #r25429
Plague MarePlague Mare card image (m19) 114 #r17195
Psychic SymbiontPsychic Symbiont card image (m19) 221 #r18276
SlitherwispSlitherwisp card image (iko) 345 #r9768
Slithery StalkerSlithery Stalker card image (tor) 84 #r22204
Soul ScourgeSoul Scourge card image (tor) 85 #r25042
Soulgorger OrggSoulgorger Orgg card image (jud) 99 #r11313
Spellgorger BarbarianSpellgorger Barbarian card image (jud) 100 #r24680
Stallion of AshmouthStallion of Ashmouth card image (soi) 136 #r23938
Startled Awake // Persistent NightmareStartled Awake // Persistent Nightmare card image (soi) 88 #r9579
Swimmer in NightmaresSwimmer in Nightmares card image (thb) 275 #r22740
Underworld ChargerUnderworld Charger card image (thb) 120 #r20047
Vitality HunterVitality Hunter card image (c20) 30 #r14304
Void BeckonerVoid Beckoner card image (iko) 373 #r6148
Wicked VisitorWicked Visitor card image (woe) 118 #r9107
Worldgorger DragonWorldgorger Dragon card image (jud) 103 #r4286
Wormfang BehemothWormfang Behemoth card image (jud) 55 #r26474
Wormfang CrabWormfang Crab card image (jud) 56 #r17476
Wormfang DrakeWormfang Drake card image (jud) 57 #r17842
Wormfang MantaWormfang Manta card image (jud) 58 #r19097
Wormfang NewtWormfang Newt card image (jud) 59 #r25465
Wormfang TurtleWormfang Turtle card image (jud) 60 #r22370
Zagoth MambaZagoth Mamba card image (iko) 106 #r12378

Other Changelings

Amoeboid ChangelingAmoeboid Changeling card image (lrw) 51 #r4036 (changeling)
Amorphous AxeAmorphous Axe card image (mh1) 219 #r11060 (changeling)
ArachnoformArachnoform card image (khm) 159 #r12403 (changeling)
Avian ChangelingAvian Changeling card image (lrw) 4 #r7577 (changeling)
Blades of Velis VelBlades of Velis Vel card image (lrw) 152 #r9448 (changeling)
Bloodline PretenderBloodline Pretender card image (khm) 235 #r1323 (changeling)
Cairn WandererCairn Wanderer card image (lrw) 105 #r8301 (changeling)
Chameleon ColossusChameleon Colossus card image (mor) 116 #r3540 (changeling)
Changeling BerserkerChangeling Berserker card image (lrw) 160 #r9528 (changeling)
Changeling HeroChangeling Hero card image (lrw) 9 #r11715 (changeling)
Changeling OutcastChangeling Outcast card image (mh1) 82 #r602 (changeling)
Changeling SentinelChangeling Sentinel card image (mor) 6 #r14549 (changeling)
Changeling TitanChangeling Titan card image (lrw) 200 #r10191 (changeling)
Crib SwapCrib Swap card image (lrw) 11 #r2113 (changeling)
Ego ErasureEgo Erasure card image (lrw) 59 #r19321 (changeling)
Fire-Belly ChangelingFire-Belly Changeling card image (lrw) 164 #r9121 (changeling)
Game-Trail ChangelingGame-Trail Changeling card image (mor) 123 #r11129 (changeling)
Ghostly ChangelingGhostly Changeling card image (lrw) 116 #r12225 (changeling)
Gladewalker RitualistGladewalker Ritualist card image (khm) 392 #r14925 (changeling)
GraveshifterGraveshifter card image (mh1) 94 #r2872 (changeling)
Guardian GladewalkerGuardian Gladewalker card image (khm) 174 #r5474 (changeling)
Impostor of the Sixth PrideImpostor of the Sixth Pride card image (mh1) 14 #r6377 (changeling)
Irregular CohortIrregular Cohort card image (mh1) 15 #r3238 (changeling)
Littjara Glade-WardenLittjara Glade-Warden card image (khm) 182 #r12595 (changeling)
Littjara KinseekersLittjara Kinseekers card image (khm) 66 #r11650 (changeling)
Masked VandalMasked Vandal card image (khm) 184 #r1233 (changeling)
Maskwood NexusMaskwood Nexus card image (khm) 240 #r518 (changeling)
Mirror EntityMirror Entity card image (lrw) 31 #r650 (changeling)
Mistform DreamerMistform Dreamer card image (ons) 93 #r24995 (changeling)
Mistform MaskMistform Mask card image (ons) 94 #r18779 (changeling)
Mistform MutantMistform Mutant card image (ons) 95 #r16876 (changeling)
Mistform SeaswiftMistform Seaswift card image (lgn) 45 #r25635 (changeling)
Mistform ShriekerMistform Shrieker card image (ons) 96 #r26236 (changeling)
Mistform SkyreaverMistform Skyreaver card image (ons) 97 #r26323 (changeling)
Mistform SliverMistform Sliver card image (lgn) 46 #r19783 (changeling)
Mistform StalkerMistform Stalker card image (ons) 98 #r25302 (changeling)
Mistform WakecasterMistform Wakecaster card image (lgn) 48 #r24065 (changeling)
Mistform WallMistform Wall card image (ons) 99 #r23919 (changeling)
Mistform WarchiefMistform Warchief card image (scg) 43 #r13652 (changeling)
MistwalkerMistwalker card image (khm) 68 #r9369 (changeling)
Moonglove ChangelingMoonglove Changeling card image (mor) 67 #r11538 (changeling)
Mothdust ChangelingMothdust Changeling card image (mor) 42 #r3103 (changeling)
Nameless InversionNameless Inversion card image (lrw) 128 #r9148 (changeling)
RealmwalkerRealmwalker card image (khm) 399 #r487 (changeling)
Runed StalactiteRuned Stalactite card image (lrw) 260 #r11377 (changeling)
ShapesharerShapesharer card image (lrw) 85 #r7260 (changeling)
Shields of Velis VelShields of Velis Vel card image (lrw) 39 #r7368 (changeling)
Skeletal ChangelingSkeletal Changeling card image (lrw) 140 #r7640 (changeling)
Taurean MaulerTaurean Mauler card image (mor) 109 #r931 (changeling)
Turtleshell ChangelingTurtleshell Changeling card image (lrw) 94 #r15254 (changeling)
Universal AutomatonUniversal Automaton card image (mh1) 235 #r1449 (changeling)
Unsettled MarinerUnsettled Mariner card image (mh1) 216 #r3350 (changeling)
Valiant ChangelingValiant Changeling card image (mh1) 34 #r7362 (changeling)
Venomous ChangelingVenomous Changeling card image (mh1) 114 #r7756 (changeling)
War-Spike ChangelingWar-Spike Changeling card image (mor) 112 #r14289 (changeling)
Webweaver ChangelingWebweaver Changeling card image (mh1) 192 #r10376 (changeling)
Wings of Velis VelWings of Velis Vel card image (lrw) 97 #r11886 (changeling)
Woodland ChangelingWoodland Changeling card image (lrw) 242 #r7021 (changeling)

Nightmare Support Cards

Ashiok, Nightmare MuseAshiok, Nightmare Muse card image (thb) 256 #r3955
Ashiok, Nightmare WeaverAshiok, Nightmare Weaver card image (ths) 188 #r7114
Ashiok, Wicked ManipulatorAshiok, Wicked Manipulator card image (woe) 78 #r12237
Cacophony UnleashedCacophony Unleashed card image (cmm) 761 #r7576
Chainer's TormentChainer's Torment card image (dom) 82 #r14208
Hopeless NightmareHopeless Nightmare card image (woe) 95 #r7859
Restless FortressRestless Fortress card image (woe) 305 #r5211

Generic Support cards

Adaptive AutomatonAdaptive Automaton card image (m12) 201 #r1499
An-Zerrin RuinsAn-Zerrin Ruins card image (hml) 64 #r20854
Arcane AdaptationArcane Adaptation card image (xln) 46 #r2630
Ashes of the FallenAshes of the Fallen card image (sok) 152 #r15062
Belbe's PortalBelbe's Portal card image (nem) 127 #r7122
Brass HeraldBrass Herald card image (apc) 133 #r9315
Caller of the HuntCaller of the Hunt card image (mmq) 233 #r17207
Cavern of SoulsCavern of Souls card image (avr) 226 #r133
Circle of SolaceCircle of Solace card image (ons) 13 #r24652
ConspiracyConspiracy card image (mmq) 127 #r6810
Cover of DarknessCover of Darkness card image (ons) 133 #r3825
Doom CannonDoom Cannon card image (ons) 307 #r22545
Door of DestiniesDoor of Destinies card image (pmor) 143★ #r884
Elvish SoultillerElvish Soultiller card image (lgn) 124 #r16518
Engineered PlagueEngineered Plague card image (ulg) 51 #r16176
Etchings of the ChosenEtchings of the Chosen card image (mh1) 198 #r2165
From the RubbleFrom the Rubble card image (lcc) 72 #r8948
Herald's HornHerald's Horn card image (c17) 53 #r139
Icon of AncestryIcon of Ancestry card image (m20) 229 #r1508
Instruments of WarInstruments of War card image (j22) 50 #r9800
Kindred BoonKindred Boon card image (c17) 5 #r6179
Kindred DiscoveryKindred Discovery card image (c17) 11 #r353
Metallic MimicMetallic Mimic card image (aer) 164 #r1121
Mirror of the ForebearsMirror of the Forebears card image (c17) 54 #r6856
Molten EchoesMolten Echoes card image (c20) 54 #r1608
Obelisk of UrdObelisk of Urd card image (m15) 222 #r2259
Pillar of OriginsPillar of Origins card image (xln) 241 #r3841
Plague EngineerPlague Engineer card image (mh1) 100 #r11310
Progenitor's IconProgenitor's Icon card image (lcc) 68 #r6659
Radiant DestinyRadiant Destiny card image (rix) 18 #r4486
Rally the RanksRally the Ranks card image (khm) 336 #r3095
Reflections of LittjaraReflections of Littjara card image (khm) 73 #r516
Riders of GavonyRiders of Gavony card image (avr) 33 #r7333
Roaming ThroneRoaming Throne card image (lci) 344 #r418
Rukarumel, BiologistRukarumel, Biologist card image (cmm) 776 #r10108
Secluded CourtyardSecluded Courtyard card image (neo) 512 #r278
Shared TriumphShared Triumph card image (ons) 53 #r12542
Species SpecialistSpecies Specialist card image (c20) 47 #r2016
Steely ResolveSteely Resolve card image (ons) 286 #r7224
Titan of LittjaraTitan of Littjara card image (cmm) 760 #r4662
Unclaimed TerritoryUnclaimed Territory card image (xln) 258 #r204
Urza's IncubatorUrza's Incubator card image (uds) 142 #r525
Vanquisher's BannerVanquisher's Banner card image (xln) 251 #r272
XenograftXenograft card image (nph) 51 #r9244

Mentions (name and flavour text)

Ashiok's AdeptAshiok's Adept card image (bng) 59 #r21200
Chainer, Nightmare AdeptChainer, Nightmare Adept card image (c19) 39 #r1306
Collective NightmareCollective Nightmare card image (mom) 95 #r19284
Elspeth's NightmareElspeth's Nightmare card image (thb) 91 #r7302
Every Dream a NightmareEvery Dream a Nightmare card image (oe01) 6★ #r0
NightmareNightmare card image (twoe) 6 #r0
NightmareNightmare card image (tthb) 12 #r0
Nightmare HorrorNightmare Horror card image (tdom) 6 #r0
Nightmare IncursionNightmare Incursion card image (eve) 40 #r17604
Nightmare LashNightmare Lash card image (mrd) 219 #r9294
Nightmare Moon // Princess LunaNightmare Moon // Princess Luna card image (ptg) 1 #r0
Nightmare ShepherdNightmare Shepherd card image (thb) 108 #r3480
Nightmare UnmakingNightmare Unmaking card image (c19) 20 #r6024
Nightmare VoidNightmare Void card image (rav) 100 #r17714
Nightmare's ThirstNightmare's Thirst card image (m19) 111 #r14999
Nightmarish EndNightmarish End card image (jou) 76 #r21612
Sivriss, Nightmare SpeakerSivriss, Nightmare Speaker card image (clb) 500 #r6097
Tormented ThoughtsTormented Thoughts card image (jou) 86 #r19278
Waking NightmareWaking Nightmare card image (chk) 149 #r20079

Not (yet?) EDH-legal

Chthonian NightmareChthonian Nightmare card image (mh3) 83 #r0 #NEW
Kathril, Aspect WarperKathril, Aspect Warper card image (c20) 10 #r10359
Recurring NightmareRecurring Nightmare card image (exo) 72 #r0
The Ultimate Nightmare of Wizards of the Coast® Customer ServiceThe Ultimate Nightmare of Wizards of the Coast® Customer Service card image (ugl) 53 #r0

Scryfall art tags

https://tagger.scryfall.com/tags/artwork/nightmare

#r= gives the edhrec rank of the card; the lower the ranking, the more decks the card is played in.