See these four Maro articles for details
CW01 — Dusk Vulture (creature, small, flying, husk)
CW02 — Noble Chorister (creature, small, protection)
CW03 — Martyr (creature, small)
CW04 — Sword Brothers (creature, small, twin)
CW05 — Hawkmeld Trainee (creature, small, flying)
CW06 — Ghostlight Caster (creature, small)
CW07 — Ephemeral Haunter (creature, medium, husk)
CW08 — Umbral Warhawk (creature, small, flying, immolate)
CW09 — Lifewell Guardians (creature, medium)
CW10 — Freedom's Cry (instant)
CW11 — Celebration of Diversity (sorcery)
CW12 — Purity of Body (sorcery)
CW13 — Rousing Address (instant, first strike, lifelink)
CW14 — Cage the Soul (enchantment, enchant)
CU01 — Looter of New Worlds (creature, small)
CU02 — Patchwork Homunculus (creature, small, emerge)
CU03 — Stormcloud Drake (creature, small, flying, haste), Mirrorshield Velites (creature, small, twin)
CU04 — Divining Noggle (creature, small, resound)
CU05 — Watcher of the Skies (creature, small, flying)
CU06 — Spellgorge Serpent (creature, large, defender)
CU07 — Morphic Dream (instant, shroud)
CU08 — Shadow Across the Land (instant)
CU09 — Think Slow (sorcery)
CU10 — Enforce Hegemony (instant)
CU11 — Deny (instant)
CU12 — Weight of Spectres (enchantment, enchant)
CU13 — Oust the Incumbent (instant)
CU14 — Scholastic Recall (sorcery)
CB01 — Laboratory Pet (creature, small)
CB02 — Stumbling Mawkin (creature, small, intimidate)
CB03 — Blunt Informant (creature, small, immolate)
CB04 — Zhauri Wretch (creature, small, emerge)
CB05 — Hagfen Bats (creature, small, flying)
CB06 — Unburdened Hypnotist (creature, small, immolate)
CB07 — Helcrypt Demagogue (creature, medium)
CB08 — Twilight Wurm (creature, medium, husk)
CB09 — Suck Under (instant)
CB10 — Litany of Orobis (instant, deathtouch)
CB11 — Sloughing Flesh (enchantment, enchant, intimidate)
CB12 — Whispered Malediction (instant)
CB13 — Grim Surgery (sorcery)
CB14 — Brutal Interrogation (sorcery)
CR01 — Lavaaxeamancer (creature, small, resound)
CR02 — Shatter Thug (creature, small, immolate)
CR03 — Hook Prelate (creature, small, haste, immolate)
CR04 — Scornful Lavamancer (creature, small)
CR05 — Bellowing Noggle (creature, small, resound)
CR06 — Flagellant (creature, small)
CR07 — Fanatical Troops (creature, small, haste, twin)
CR08 — Goreplate Phalanx (creature, medium, immolate)
CR09 — Act on Impulse (sorcery)
CR10 — Bloodfiend Ritual (instant, flying)
CR11 — Charged Lightning (instant)
CR12 — Distomic Fury (enchantment, enchant, first strike)
CR13 — Increase the Pressure (instant)
CR14 — Flames of Idara (instant)
CG01 — Hunting Trogle (creature, small)
CG02 — Acid Jaw Beetle (creature, small, resound)
CG03 — Idaran Broodcaller (creature, small, resound)
CG04 — Leyline Hunter (creature, small)
CG05 — Twisted Arach (creature, medium, reach, emerge)
CG06 — Protospore Murlodont (creature, medium, emerge)
CG07 — Hagfen Shambler (creature, medium, husk)
CG08 — Convulsing Flesh-Hulk (creature, medium)
CG09 — Portal of Vitality (enchantment)
CG10 — Warped Growth (instant)
CG11 — Terramorphose (instant)
CG12 — Encroaching Quagmire (sorcery)
CG13 — Temporary Mutation (instant, flying)
CG14 — Hubris Cloak (enchantment, enchant, trample)
CM01 — Corpse Dragger (creature, medium)
CM02 — Mirthless Cavalcade (instant)
CM03 — Sumas Legionaire (creature, small, haste)
CM04 — Force of Arms (instant, double strike)
CM05 — Portal Invader (creature, small)
CM06 — Aether Geyser (instant)
CM07 — Panglacial Placeholder (creature, small)
CM08 — Seek the Firesky (instant)
CM09 — Foetid Mycodon (creature, small)
CM10 — Blessing of Darkness (enchantment, enchant)
CM11 — Damassian Captain (creature, small, first strike, immolate)
CM12 — Idaran Invader (creature, small, trample, resound)
CM13 — Pykmarsh Revenant (creature, small, lifelink, husk)
CM14 — Sumassian Skywardens (creature, small, flying, twin)
CM15 — Zhaurian Bat (creature, small, deathtouch, flash, flying), Grafted Behemoth (creature, large, trample), Emergent Monstrosity (creature, medium, emerge), Zhauri Limbfiend (creature, small, reach)
CC01 — Damassian Automaton (artifact creature, small)
CC02 — Idaran Automaton (artifact creature, small, flash)
CC03 — Pyk Automaton (artifact creature, small, vigilance)
CC04 — Sumassian Automaton (artifact creature, small, flying)
CC05 — Zhauri Automaton (artifact creature, small, defender)
CC06 — Mercantile Golem (artifact creature, medium), Hieratic Sphere (artifact)
CC07 — Ravaged Meadow (land)
CC08 — Hillside Lagoon (land)
CC09 — Neglected Cemetery (land)
CC10 — Clifftop Pasture (land)
CC11 — Sunken Thicket (land)
CC12 — Nexus of Blood (land)
CC13 — Nexus of Portals (land)
CC14 — Nexus of Graves (land)
CC15 — Nexus of Mirrors (land)
CC16 — Nexus of Flesh (land)
UW01 — Legion-Soul Vanguard (creature, small)
UW02 — Trueheart Gallant (creature, small, indestructible)
UW04 — Merciless Commander (creature, small, immolate)
UW05 — Stalwart Phantasm (creature, small, husk)
UW06 — Press Gang Officer (creature, medium)
UW07 — Echo of Knives (instant)
UW08 — Senatorial Authority (enchantment, enchant, protection)
UW09 — Tide of Iron (enchantment)
UU01 — Wellspring Guardians (creature, small, shroud, twin)
UU03 — Zhauri Fleshgrafter (creature, small), Silent Seer (creature, small), Warpflesh Barrier (creature, medium, defender, emerge)
UU04 — Screeching Fiend (creature, medium, flying), Tornado Channeller (creature, medium, flying, resound), Idaran Mindshriveler (creature, medium, resound), Portal Meditator (creature, small), Rescue Squadron (creature, small, flying)
UU05 — Somnus Shine (instant)
UU06 — Vitrification (instant)
UU07 — Veto (instant)
UU08 — Invasion Plots (instant)
UU09 — Dismissing Ward (enchantment, resound)
UB01 — Biledreg (creature, small, swampwalk)
UB03 — Pykmarsh Battlemage (creature, small)
UB04 — Acolyte of Bry'zan (creature, small), Soulfeast Prelate (creature, small, intimidate, immolate), Blood Drinker (creature, medium)
UB05 — Hagfen Haunt (creature, small, flying, husk), Fleshvat Fiend (creature, small, flying)
UB06 — Ritual of Bry'zan (sorcery, husk)
UB07 — Dawn of Despair (sorcery), Nefarious Tutor (sorcery)
UB08 — Experimenter's Edict (instant)
UB09 — Spitelance (sorcery)
UR01 — Treasure Goblin (creature, small)
UR03 — Stoneway Grunts (creature, medium, twin), Battlefield Sneak (creature, small, haste)
UR04 — Capricious Noggle (creature, small), Agrarian Enforcer (creature, small), Tonitrua Giant (creature, medium, haste), Bloody-Robed Priest (creature, small, haste)
UR05 — Rain of Fire (instant)
UR06 — Reverse the Mirror (instant)
UR07 — Idaran Lightning Cannon (enchantment, resound)
UR08 — Carmine Fluxgate (enchantment, haste, resound), Transdimensional Egress (enchantment, flying, resound)
UR09 — Singular Purpose (sorcery), Lava Cone (sorcery)
UG01 — Gravebloom Tender (creature, small, husk), Lupercal Hunter (creature, small, shroud, husk)
UG02 — Seeking Battlemage (creature, small)
UG03 — Idaran War Bear (creature, small, resound), Quilled Phyrnosom (creature, medium, flying, resound)
UG04 — Protoplasm (creature, small, emerge)
UG05 — Fickle Groundsman (creature, small, flash)
UG06 — Harmonious Creation (creature, large, trample)
UG07 — Devour the Organs (sorcery)
UG08 — Free the Failures (sorcery)
UG09 — Flowering Burial Ground (instant)
UM01 — Sumas Skycaptain (creature, medium, flying)
UM02 — Twilight Liminid (creature, small)
UM04 — Naithar Heretic (creature, medium), Demonsoul Hero (creature, medium, flying)
UM05 — Wicked Creation (creature, small, emerge), Alchemical Drake (creature, small, flying)
UM06 — Last Gasp Solution (sorcery), Thought Shards (instant), Chronotine Stinger (creature, medium, haste)
UM07 — Waypoint Drake (creature, small, flying, resound)
UM08 — Ashpyre Summons (sorcery)
UM09 — Priest of Orobis (creature, small, deathtouch)
UM10 — Herald of the Visitant (creature, small, haste, resound), Charging Scalehorn (creature, medium, trample)
UM11 — Gravid Soulspiller Redux (creature, small), Gravid Soulspiller (creature, medium)
UM12 — Damas Charm (instant)
UM13 — Pouncing Saurian (creature, medium, flash)
UM14 — Idara Charm (instant)
UM15 — Voidbark Elder (creature, medium, vigilance)
UM16 — Pyk Charm (instant)
UM17 — Shard Hunters (creature, medium, double strike)
UM18 — Sumas Charm (instant)
UM19 — Deadly Filcher (creature, small, deathtouch)
UM20 — Zhaur Charm (instant)
UC01 — Fluxgate Beacon (artifact)
UC02 — Pressure Plate (artifact)
UC03 — Summoner's Sundial (artifact)
UC04 — Mortician's Knife (artifact, equip)
UC05 — Summoner's Disc (artifact), Death Absorber (artifact)
UC06 — Hallowed Bloodpit (land)
UC07 — Invader's Fortress (land)
UC08 — Forgotten Sanctuary (land)
UC09 — Senate Halls (land)
UC10 — Wildwood Laboratory (land)
RU01 — Mournful Fleshling (creature, small), Glider Twins (creature, small, flying, twin)
RU04 — Firesky Enchanter (creature, small, flying, resound)
RB01 — Cavernous Maw Beast (creature, medium, deathtouch, first strike, trample)
RM03 — Sumassian Retromacers (creature, small, twin)
RM11 — Ethelegad, Furious Vengeance (legendary creature, large, flying, haste)
RM12 — Life Seeder (creature, medium, resound)
RM13 — Liege of Hafgen (legendary creature, large, husk)
RM14 — Master of Mirrors (creature, small, flying)
RM15 — Keys to the Lab (enchantment)
RC07 — Field of Many Battles (land, immolate)
RC08 — Foreign Territory (land, resound)
RC09 — Marsh of Forgetting (land, husk)
RC10 — Passage of Gladiators (land, haste, twin)
RC11 — Fecund Laboratory (land, emerge)
No Slot:
Dualling Blades (artifact, equip, twin)
Damassian Battlemage (creature, small)
Sumassian Lancers (creature, small, first strike, twin)
Idaran Battlemage (creature, small)
Mirrorblind (instant)
Sumassian Battlemage (creature, small)
Brumate Tuatura (creature, small, defender, resound)
Twinfeint Tactics (enchantment, enchant)
Bleed the Land (enchantment, enchant)
Zhauri Battlemage (creature, small)
Unnatural Recovery (sorcery)
Insane Creation (creature, large)
Portent of Savagery (enchantment, trample, resound)
Flametower Gargoyle (creature, medium, flying)
Cinder Golem (artifact creature, medium)
Zhauri Hydra (creature, small)
Xthyxthya, Invasion Mastermind (legendary creature, medium, resound)
CW01 — creature, small, flying
CW02 — creature, small, protection
CW03 — creature, small, flying, husk
CW04 — creature, small, twin
CW05 — creature, small
CW06 — creature, small
CW07 — creature, small, flying, immolate
CW08 — creature, medium, husk
CW09 — creature, medium
CW10 — sorcery
CW11 — sorcery
CW12 — instant
CW13 — instant, first strike, lifelink
CW14 — enchantment, enchant
CU01 — creature, small, twin
CU02 — creature, small
CU03 — creature, small, flying, haste
CU04 — creature, small, emerge
CU05 — creature, small, resound
CU06 — creature, small, flying
CU07 — creature, large, defender
CU08 — sorcery
CU09 — sorcery
CU10 — instant, shroud
CU11 — instant
CU12 — instant
CU13 — instant
CU14 — instant
CU15 — enchantment, enchant
CB01 — creature, small, flying
CB02 — creature, small
CB03 — creature, small, intimidate
CB04 — creature, small, immolate
CB05 — creature, small, immolate
CB06 — creature, small, emerge
CB07 — creature, medium
CB08 — creature, medium, husk
CB09 — sorcery
CB10 — sorcery
CB11 — instant
CB12 — instant
CB13 — instant, deathtouch
CB14 — enchantment, enchant, intimidate
CR01 — creature, small, immolate
CR02 — creature, small, resound
CR03 — creature, small, haste, twin
CR04 — creature, small, haste, immolate
CR05 — creature, small, resound
CR06 — creature, small
CR07 — creature, small
CR08 — creature, medium, immolate
CR09 — sorcery
CR10 — instant
CR11 — instant
CR12 — instant
CR13 — instant, flying
CR14 — enchantment, enchant, first strike
CG01 — creature, small, resound
CG02 — creature, small
CG03 — creature, small, resound
CG04 — creature, small
CG05 — creature, medium, reach, emerge
CG06 — creature, medium, husk
CG07 — creature, medium, emerge
CG08 — creature, medium
CG09 — sorcery
CG10 — instant
CG11 — instant
CG12 — instant, flying
CG13 — enchantment, enchant, trample
CG14 — enchantment
CM01 — creature, small
CM02 — creature, small, flying, twin
CM03 — creature, small, haste
CM04 — creature, small, deathtouch, flash, flying
CM05 — creature, small
CM06 — creature, small, first strike, immolate
CM07 — creature, small, reach
CM08 — creature, small, trample, resound
CM09 — creature, small
CM10 — creature, small, lifelink, husk
CM11 — creature, medium
CM12 — creature, medium, emerge
CM13 — creature, large, trample
CM14 — instant
CM15 — instant
CM16 — instant, double strike
CM17 — instant
CM18 — enchantment, enchant
CC01 — artifact
CC02 — artifact, equip, twin
CC03 — artifact creature, small, flying
CC04 — artifact creature, small, flash
CC05 — artifact creature, small
CC06 — artifact creature, small, defender
CC07 — artifact creature, small, vigilance
CC08 — artifact creature, medium
CC09 — land
CC10 — land
CC11 — land
CC12 — land
CC13 — land
CC14 — land
CC15 — land
CC16 — land
CC17 — land
CC18 — land
UW01 — creature, small
UW02 — creature, small, immolate
UW03 — creature, small
UW04 — creature, small, first strike, twin
UW05 — creature, small, indestructible
UW06 — creature, small, husk
UW07 — creature, medium
UW08 — instant
UW09 — enchantment, enchant, protection
UW10 — enchantment
UU01 — creature, small
UU02 — creature, small
UU03 — creature, small, shroud, twin
UU04 — creature, small, flying
UU05 — creature, small
UU06 — creature, small
UU07 — creature, medium, flying
UU08 — creature, medium, flying, resound
UU09 — creature, medium, resound
UU10 — creature, medium, defender, emerge
UU11 — instant
UU12 — instant
UU13 — instant
UU14 — instant
UU15 — instant
UU16 — enchantment, resound
UB01 — creature, small, flying
UB02 — creature, small, swampwalk
UB03 — creature, small
UB04 — creature, small, flying, husk
UB05 — creature, small
UB06 — creature, small, intimidate, immolate
UB07 — creature, medium
UB08 — sorcery, husk
UB09 — sorcery
UB10 — sorcery
UB11 — sorcery
UB12 — instant
UR01 — creature, small, haste
UR02 — creature, small
UR03 — creature, small
UR04 — creature, small
UR05 — creature, small, haste
UR06 — creature, small
UR07 — creature, small, defender, resound
UR08 — creature, medium, twin
UR09 — creature, medium, haste
UR10 — sorcery
UR11 — sorcery
UR12 — instant
UR13 — instant
UR14 — enchantment, haste, resound
UR15 — enchantment, resound
UR16 — enchantment, enchant
UR17 — enchantment, enchant
UR18 — enchantment, flying, resound
UG01 — creature, small, husk
UG02 — creature, small, flash
UG03 — creature, small, emerge
UG04 — creature, small, resound
UG05 — creature, small
UG06 — creature, small, shroud, husk
UG07 — creature, small
UG08 — creature, medium, flying, resound
UG09 — creature, large, trample
UG10 — creature, large
UG11 — sorcery
UG12 — sorcery
UG13 — sorcery
UG14 — instant
UG15 — enchantment, trample, resound
UM01 — creature, small
UM02 — creature, small
UM03 — creature, small, deathtouch
UM04 — creature, small, flying, resound
UM05 — creature, small, haste, resound
UM06 — creature, small, deathtouch
UM07 — creature, small, emerge
UM08 — creature, small, flying
UM09 — creature, medium, haste
UM10 — creature, medium
UM11 — creature, medium, flying
UM12 — creature, medium, double strike
UM13 — creature, medium, flash
UM14 — creature, medium, flying
UM15 — creature, medium, vigilance
UM16 — creature, medium
UM17 — creature, medium, trample
UM18 — sorcery
UM19 — sorcery
UM20 — instant
UM21 — instant
UM22 — instant
UM23 — instant
UM24 — instant
UM25 — instant
UC01 — artifact
UC02 — artifact
UC03 — artifact, equip
UC04 — artifact
UC05 — artifact
UC06 — artifact
UC07 — creature, medium, flying
UC08 — artifact creature, medium
UC09 — land
UC10 — land
UC11 — land
UC12 — land
UC13 — land
RU01 — creature, small, flying, twin
RU02 — creature, small
RU03 — creature, small, flying, resound
RB01 — creature, medium, deathtouch, first strike, trample
RG01 — creature, small
RM01 — creature, small, flying
RM02 — creature, small, twin
RM03 — legendary creature, medium, resound
RM04 — creature, medium, resound
RM05 — legendary creature, large, husk
RM06 — legendary creature, large, flying, haste
RM07 — enchantment
RC01 — land, haste, twin
RC02 — land, emerge
RC03 — land, husk
RC04 — land, immolate
RC05 — land, resound