[2021] Can't add Midweek Magic Decks?

Hey, sorry about the missing button! I grabbed the list for you:

Commander

1 Sorin, Imperious Bloodlord (M20) 115

Deck

1 Gifted Aetherborn (JMP) 239
1 Slaughter Specialist (MID) 122
1 Vampire Interloper (MID) 125
1 Callous Bloodmage (STX) 66
1 Drana, Liberator of Malakir (JMP) 225
1 Silversmote Ghoul (M21) 122
1 Essence Infusion (STX) 69
1 Stromkirk Bloodthief (MID) 123
1 Bat Whisperer (MID) 86
1 Twilight Prophet (RIX) 88
1 Heartless Act (IKO) 91
1 Champion of Dusk (RIX) 64
1 Drana, the Last Bloodchief (ZNR) 98
1 Essence Extraction (KLR) 83
1 Vampire Sovereign (M19) 125
1 Vengeant Vampire (G18) GP3
1 The Haunt of Hightower (RNA) 273
1 Deathless Ancient (XLN) 100
1 Westgate Regent (AFR) 126
1 Dusk Legion Zealot (RIX) 70
1 Falkenrath Noble (JMP) 232
1 Exquisite Blood (JMP) 231
1 Vito, Thorn of the Dusk Rose (M21) 127
1 Bloodthirsty Aerialist (M20) 91
1 Marauding Blight-Priest (ZNR) 112
1 Bloodbond Vampire (JMP) 209
1 Voracious Vampire (RIX) 91
1 Thirsting Bloodlord (M20) 293
1 Sanctum Seeker (XLN) 120
1 Blood Artist (JMP) 206
1 Knight of the Ebon Legion (M20) 105
1 Vampire of the Dire Moon (M20) 120
1 Oathsworn Vampire (RIX) 80
1 Scion of the Swarm (ZNR) 121
1 Raise the Draugr (KHM) 105
1 Sorin's Thirst (WAR) 104
1 Bloodline Culling (MID) 89
1 Reaper's Talisman (AFR) 117
1 Castle Locthwain (ELD) 241
1 Shadowspear (THB) 236
1 Mask of Griselbrand (MID) 111
1 Indulgent Aristocrat (J21) 56
1 Cordial Vampire (MH1) 83
1 Death-Priest of Myrkul (AFR) 95
1 Vraska's Contempt (XLN) 129
1 Vindictive Vampire (RNA) 90
1 The Ozolith (IKO) 237
1 Herald's Horn (JMP) 469
1 Icon of Ancestry (M20) 229
1 Vanquisher's Banner (XLN) 251
1 Crippling Fear (KHM) 82
1 Metallic Mimic (KLR) 251
1 Bloodline Pretender (KHM) 235
1 Changeling Outcast (MH1) 82
1 Faceless Agent (J21) 1
1 Tenured Inkcaster (STX) 88
1 Hagra Mauling (ZNR) 106
1 Cabal Stronghold (DAR) 238
1 Vicious Conquistador (XLN) 128
1 Lich's Caress (M19) 105
39 Swamp (M20) 272

(Edit: Fixed up the formatting a little. Glad you're enjoying it!)

Commander
1 Hofri Ghostforge (STX) 192

Deck
1 Usher of the Fallen (KHM) 35
1 Returned Pastcaller (STX) 224
1 Quintorius, Field Historian (STX) 220
1 Skyclave Apparition (ZNR) 39
1 Pilgrim of the Ages (STX) 22
1 Clarion Spirit (KHM) 6
1 Stonebinder's Familiar (STX) 31
1 Pillardrop Rescuer (STX) 23
1 Spiritual Guardian (ANB) 21
1 Venerable Warsinger (STX) 246
1 Arcane Signet (ELD) 331
1 Sacred Fire (MID) 239
1 Angelfire Ignition (MID) 209
1 Devil's Play (ISD) 140
1 Homestead Courage (MID) 24
1 Alseid of Life's Bounty (THB) 1
1 Dauntless Bodyguard (DAR) 14
1 Selfless Savior (M21) 36
1 Cathar Commando (MID) 10
1 Daxos, Blessed by the Sun (THB) 9
1 Tiger-Tribe Hunter (AFR) 163
1 Goblin Cratermaker (GRN) 103
1 Surtland Flinger (KHM) 377
1 Solemn Simulacrum (M21) 239
1 Anax, Hardened in the Forge (THB) 125
1 Hero of the Nyxborn (THB) 219
1 Battle Cry Goblin (AFR) 132
1 Guardian of Faith (AFR) 18
1 Hanged Executioner (M20) 22
1 Swiftblade Vindicator (GRN) 203
1 Blade Historian (STX) 165
1 Fireborn Knight (ELD) 210
1 Soul of Migration (MH2) 33
1 Anointed Procession (AKR) 2
1 Lorehold Command (STX) 199
1 Swords to Plowshares (STA) 10
1 Lightning Bolt (STA) 42
1 Ambitious Farmhand (MID) 2
1 Reckless Charge (MH1) 144
1 Ministrant of Obligation (RNA) 16
1 Elspeth Conquers Death (THB) 13
1 Illustrious Historian (STX) 109
1 Light of the Legion (GRN) 19
1 Elesh Norn, Grand Cenobite (NPH) 9
1 Combustible Gearhulk (KLR) 120
1 Seasoned Pyromancer (MH1) 145
1 Shelter (MH1) 28
1 Coldsteel Heart (CSP) 136
1 Mind Stone (WTH) 153
1 Ornithopter of Paradise (MH2) 232
1 Palladium Myr (M21) 234
1 The Immortal Sun (RIX) 180
1 Basri's Acolyte (M21) 8
1 Irregular Cohort (MH1) 15
1 Lightning Helix (STA) 62
1 Rip Apart (STX) 225
1 Aurelia, Exemplar of Justice (GRN) 153
1 Phoenix of Ash (THB) 148
16 Plains (STX) 366
14 Mountain (STX) 373
1 Needleverge Pathway (ZNR) 263
1 Inspiring Vantage (KLR) 283
1 Furycalm Snarl (STX) 266
1 Temple of Triumph (M20) 257
1 Sacred Foundry (GRN) 254
1 Wind-Scarred Crag (M20) 260
1 Den of the Bugbear (AFR) 254
1 Cave of the Frost Dragon (AFR) 253
1 Command Tower (ELD) 333
1 Fabled Passage (ELD) 244
1 Evolving Wilds (M20) 246

I think these all look up to date:

Commander
1 Oko, the Trickster (ELD) 309

Deck
1 Roalesk, Apex Hybrid (WAR) 213
1 Merfolk Skydiver (WAR) 205
1 Counterspell (STA) 15
1 Contentious Plan (WAR) 46
1 Flux Channeler (WAR) 52
1 Tezzeret's Gambit (STA) 21
1 Inexorable Tide (SOM) 35
1 Pollenbright Druid (WAR) 173
1 Smell Fear (MH2) 173
1 Evolution Sage (WAR) 159
1 Abundant Harvest (STA) 48
1 Branching Evolution (JMP) 29
1 Hardened Scales (J21) 99
1 Swarm Shambler (ZNR) 207
1 Dragonsguard Elite (STX) 127
1 Emergent Sequence (STX) 129
1 Turntimber Symbiosis (ZNR) 215
1 Incubation Druid (RNA) 131
1 Growth Spiral (STA) 61
1 Invigorating Surge (M21) 190
1 Champion of Lambholt (JMP) 383
1 Hydra's Growth (THB) 172
1 Oran-Rief Ooze (ZNR) 198
1 Rishkar, Peema Renegade (KLR) 179
1 Scurry Oak (MH2) 172
1 Mowu, Loyal Companion (WAR) 167
1 Armorcraft Judge (KLR) 153
1 Vastwood Surge (ZNR) 217
1 Verdurous Gearhulk (KLR) 185
1 Biogenic Upgrade (RNA) 123
1 Vorinclex, Monstrous Raider (KHM) 199
1 Voracious Hydra (M20) 200
1 Bred for the Hunt (J21) 112
1 Quandrix Command (STX) 217
1 Sharktocrab (RNA) 206
1 Zegana, Utopian Speaker (RNA) 214
1 Tanazir Quandrix (STX) 240
1 Unnatural Growth (MID) 206
1 Wizard Class (AFR) 81
1 Inscription of Abundance (ZNR) 186
1 Spectral Adversary (MID) 77
1 Pelt Collector (GRN) 141
1 Thorn Mammoth (ELD) 323
1 Cultivate (M21) 177
1 Explore (JMP) 393
1 Arcane Signet (ELD) 331
1 Phantasmal Form (MH1) 61
1 The First Iroan Games (THB) 170
1 Monstrous Onslaught (KLR) 169
1 Rishkar's Expertise (KLR) 180
1 Tuinvale Treefolk (ELD) 180
1 Skatewing Spy (RNA) 52
1 Skyship Plunderer (KLR) 67
1 Primal Might (M21) 197
1 Feral Hydra (JMP) 395
1 Ochre Jelly (AFR) 196
1 Hadana's Climb (RIX) 158
1 Littjara Mirrorlake (KHM) 264
1 Breeding Pool (RNA) 246
1 Barkchannel Pathway (KHM) 251
1 Hinterland Harbor (DAR) 240
1 Temple of Mystery (M20) 255
1 Vineglimmer Snarl (STX) 274
1 Command Tower (ELD) 333
1 Fabled Passage (ELD) 244
1 Thornwood Falls (M21) 257
1 Botanical Sanctum (KLR) 281
1 Castle Garenbrig (ELD) 240
1 Khalni Garden (J21) 121
1 Rimewood Falls (KHM) 266
1 Quandrix Campus (STX) 271
18 Forest (ELD) 266
8 Island (ELD) 256
1 Woodland Stream (RIX) 191
1 Spark Double (WAR) 68

Commander
1 Tinybones, Trinket Thief (JMP) 17

Deck
1 Death-Priest of Myrkul (AFR) 95
1 Death Baron (M19) 90
1 Rankle, Master of Pranks (ELD) 101
1 Sign in Blood (STA) 32
1 Blood Pact (MID) 88
1 Foreboding Fruit (ELD) 88
1 Ob Nixilis, the Hate-Twisted (WAR) 100
1 Baleful Mastery (STX) 64
1 Waste Not (M15) 122
1 Skull Raid (KHM) 111
1 Flunk (STX) 71
1 Davriel, Rogue Shadowmage (WAR) 83
1 Reaper of Night (ELD) 102
1 Go Blank (STX) 72
1 Hypnotic Specter (M10) 100
1 Inscription of Ruin (ZNR) 108
1 Raiders' Wake (XLN) 116
1 Liliana, Waker of the Dead (M21) 108
1 Fell Specter (M19) 96
1 Sangromancer (JMP) 272
1 The Eldest Reborn (DAR) 90
1 The Haunt of Hightower (RNA) 273
1 Elderfang Disciple (KHM) 93
1 Burglar Rat (JMP) 214
1 Acquisitions Expert (ZNR) 89
1 Thoughtseize (AKR) 127
1 Liliana's Steward (M21) 111
1 Devour Intellect (AFR) 97
1 Dread Wanderer (AKR) 103
1 Ayara, First of Locthwain (ELD) 75
1 Drainpipe Vermin (JMP) 224
1 Black Cat (JMP) 203
1 Gutterbones (RNA) 76
1 Asylum Visitor (J21) 46
1 Manor Guardian (J21) 17
1 Boneyard Aberration (J21) 14
1 Okiba-Gang Shinobi (J21) 61
1 Inquisition of Kozilek (STA) 31
1 Entomber Exarch (JMP) 227
1 Pelakka Predation (ZNR) 120
1 Liliana's Reaver (JMP) 251
1 Graveyard Trespasser (MID) 104
1 Sedgemoor Witch (STX) 86
1 Disfigure (M20) 95
1 Chainer's Edict (TOR) 57
1 Grasp of Darkness (M21) 102
1 Infernal Grasp (MID) 107
1 Urgoros, the Empty One (DAR) 109
1 Drill Bit (RNA) 73
1 No Way Out (MID) 116
1 Bone Shards (MH2) 76
1 Command the Dreadhorde (WAR) 82
1 The Deck of Many Things (AFR) 241
1 Eaten Alive (MID) 99
1 Dark Ritual (STA) 26
1 Foulmire Knight (ELD) 90
1 Assassin's Strike (JMP) 200
39 Swamp (JMP) 55
1 Cabal Stronghold (DAR) 238
1 Castle Locthwain (ELD) 241
1 Hive of the Eye Tyrant (AFR) 258

Commander
1 Old Stickfingers (MID) 234

Companion
1 Umori, the Collector (IKO) 231

Deck
1 Blackbloom Rogue (ZNR) 91
1 Tangled Florahedron (ZNR) 211
1 Kazandu Mammoth (ZNR) 189
1 Unwilling Ingredient (STX) 90
1 Ghoulcaller's Accomplice (JMP) 237
1 Storrev, Devkarin Lich (WAR) 219
1 Reassembling Skeleton (M19) 116
1 Egon, God of Death (KHM) 92
1 Embodiment of Agonies (M20) 98
1 Gorging Vulture (M20) 102
1 Elvish Rejuvenator (M19) 180
1 Polukranos, Unchained (THB) 224
1 Carrion Grub (M21) 92
1 Ebondeath, Dracolich (AFR) 100
1 Syr Konrad, the Grim (ELD) 107
1 Dreadhound (MID) 97
1 Lotleth Giant (GRN) 74
1 Sheoldred, Whispering One (NPH) 73
1 Blex, Vexing Pest (STX) 148
1 Deathbonnet Sprout (MID) 181
1 Mire Triton (THB) 105
1 Stitcher's Supplier (M19) 121
1 Elder Gargaroth (M21) 179
1 Resilient Khenra (AKR) 212
1 Venomous Hierophant (THB) 122
1 Acolyte of Affliction (THB) 206
1 Sylvan Ranger (JMP) 435
1 Cavalier of Night (M20) 94
1 Massacre Wurm (M21) 114
1 Cavalier of Thorns (M20) 167
1 Neverwinter Dryad (AFR) 195
1 Isareth the Awakener (M19) 104
1 Goremand (M21) 101
1 Gilded Goose (ELD) 160
1 Llanowar Elves (DAR) 168
1 Ilysian Caryatid (THB) 174
1 Skull Prophet (IKO) 206
1 Beanstalk Giant (ELD) 149
1 Murderous Rider (ELD) 97
1 Garenbrig Carver (ELD) 156
1 Nullpriest of Oblivion (ZNR) 118
1 Elvish Visionary (ORI) 175
1 Llanowar Visionary (M21) 193
1 Lord of Extinction (AKR) 244
1 Underrealm Lich (GRN) 211
1 Gifted Aetherborn (JMP) 239
1 Reclamation Sage (M19) 196
1 Werewolf Pack Leader (AFR) 211
1 Voracious Hydra (M20) 200
1 Augur of Autumn (MID) 168
1 Jadelight Ranger (RIX) 136
1 Leyline Prowler (WAR) 202
1 Nyxbloom Ancient (THB) 190
1 Circle of Dreams Druid (AFR) 176
1 Ravenous Chupacabra (JMP) 269
1 Necroblossom Snarl (STX) 269
1 Darkbore Pathway (KHM) 254
1 Woodland Chasm (KHM) 274
1 Jungle Hollow (M21) 247
1 Blooming Marsh (KLR) 280
1 Overgrown Tomb (GRN) 253
1 Temple of Malady (M21) 253
1 Woodland Cemetery (DAR) 248
1 Witherbloom Campus (STX) 275
1 Command Tower (ELD) 333
1 Fabled Passage (ELD) 244
1 Ancient Ziggurat (CONF) 141
1 First-Sphere Gargantua (MH1) 91
15 Forest (AFR) 278
11 Swamp (AFR) 270
1 Archfiend of Sorrows (MH2) 74
1 Bannerhide Krushok (MH2) 149
1 Timeless Witness (MH2) 179
1 Mother Bear (MH1) 171
1 Chainweb Aracnir (THB) 167

Sideboard
1 Umori, the Collector (IKO) 231

I've tried fixing it a couple times, but reddit formatting is not playing nicely with the list for some reason. I'd recommend copying the list into a notepad document to strip the formatting, then coping from there to import.