Professor's Warning (Card)

Professor's Warning
In 10897 decks 0.33% of 3259520 decks
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Top Commanders
New Cards
High Synergy Cards
Top Cards
Game Changers
Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Shirei, Shizo's Caretaker
12.05% of 6239 decks 752 decks
Sarulf, Realm Eater
30.00% of 2240 decks 672 decks
Ob Nixilis, Captive Kingpin
5.17% of 9142 decks 473 decks
Judith, Carnage Connoisseur
4.25% of 10685 decks 454 decks
Skullbriar, the Walking Grave
5.66% of 7780 decks 440 decks
K'rrik, Son of Yawgmoth
2.47% of 16545 decks 408 decks
Marchesa, the Black Rose
3.08% of 10958 decks 337 decks
Xantcha, Sleeper Agent
5.21% of 3914 decks 204 decks
Tergrid, God of Fright
1.63% of 10345 decks 169 decks
Skithiryx, the Blight Dragon
6.85% of 2117 decks 145 decks
Chatterfang, Squirrel General
0.71% of 19916 decks 142 decks
Liliana, Heretical Healer
3.38% of 4023 decks 136 decks
Sheoldred, the Apocalypse
1.28% of 9970 decks 128 decks
Lord of the Nazgûl
0.89% of 11951 decks 106 decks
Gisa, Glorious Resurrector
7.35% of 1333 decks 98 decks
Tor Wauki the Younger
3.30% of 2791 decks 92 decks
Valgavoth, Harrower of Souls
0.56% of 16052 decks 90 decks
Wilson, Refined Grizzly // Agent of the Shadow Thieves
17.17% of 501 decks 86 decks
Vren, the Relentless
1.14% of 7387 decks 84 decks
Hancock, Ghoulish Mayor
27.40% of 281 decks 77 decks
New Cards
Black Waltz No. 3
14% of 598 decks +13% synergy
Mysidian Elder
11% of 566 decks +11% synergy
Queen Brahne
10% of 636 decks +10% synergy
Lindblum, Industrial Regency
10% of 636 decks +9% synergy
Restoration Magic
6% of 173 decks +6% synergy
High Synergy Cards
Snakeskin Veil
55% of 2804 decks +54% synergy
Cultivate
52% of 2804 decks +51% synergy
Rampant Growth
47% of 2804 decks +47% synergy
Swiftfoot Boots
42% of 10897 decks +41% synergy
Counterspell
41% of 1851 decks +41% synergy
Swords to Plowshares
38% of 1112 decks +38% synergy
Blasphemous Act
38% of 3732 decks +38% synergy
Chaos Warp
38% of 3732 decks +37% synergy
Feed the Swarm
36% of 10897 decks +36% synergy
Dark Ritual
35% of 10897 decks +35% synergy
Top Cards
Gaea's Gift
34% of 2804 decks +34% synergy
Putrefy
34% of 2804 decks +34% synergy
Tamiyo's Safekeeping
34% of 2804 decks +33% synergy
Negate
34% of 1851 decks +33% synergy
Invigorating Surge
33% of 2804 decks +32% synergy
Terminate
32% of 3732 decks +32% synergy
Rakdos Charm
32% of 3732 decks +31% synergy
Armor of Shadows
32% of 10897 decks +31% synergy
Kodama's Reach
31% of 2804 decks +31% synergy
Corpsejack Menace
31% of 2804 decks +31% synergy
Game Changers
Jeska's Will
11% of 3732 decks +10% synergy
Demonic Tutor
11% of 10897 decks +10% synergy
Rhystic Study
10% of 1851 decks +9% synergy
Bolas's Citadel
10% of 10897 decks +9% synergy
Deflecting Swat
9% of 3732 decks +9% synergy
Cyclonic Rift
9% of 1851 decks +8% synergy
Smothering Tithe
8% of 1112 decks +8% synergy
Vampiric Tutor
7% of 10897 decks +7% synergy
Teferi's Protection
7% of 1112 decks +7% synergy
Fierce Guardianship
6% of 1851 decks +6% synergy
Creatures
Forgotten Ancient
28% of 2804 decks +28% synergy
Winding Constrictor
27% of 2804 decks +27% synergy
Sakura-Tribe Elder
27% of 2804 decks +26% synergy
Slippery Bogbonder
23% of 2804 decks +23% synergy
Ignoble Hierarch
23% of 412 decks +23% synergy
Llanowar Elves
21% of 2804 decks +21% synergy
Titanoth Rex
18% of 2804 decks +18% synergy
Kessig Flamebreather
18% of 3732 decks +17% synergy
Kami of Whispered Hopes
18% of 2804 decks +17% synergy
Cankerbloom
18% of 2804 decks +17% synergy
Firebrand Archer
17% of 3732 decks +17% synergy
Eternal Witness
17% of 2804 decks +16% synergy
Storm-Kiln Artist
16% of 3732 decks +16% synergy
Gray Merchant of Asphodel
16% of 10897 decks +16% synergy
Baleful Strix
16% of 1851 decks +16% synergy
Blood Artist
16% of 10897 decks +16% synergy
Reclamation Sage
16% of 2804 decks +16% synergy
Kardur, Doomscourge
16% of 3732 decks +15% synergy
Elvish Mystic
15% of 2804 decks +14% synergy
Guttersnipe
14% of 3732 decks +13% synergy
Duskshell Crawler
13% of 2804 decks +13% synergy
Viscera Seer
13% of 10897 decks +13% synergy
Aurelia, the Warleader
13% of 353 decks +12% synergy
Thermo-Alchemist
13% of 3732 decks +12% synergy
Solemn Simulacrum
13% of 10897 decks +12% synergy
Zulaport Cutthroat
13% of 10897 decks +12% synergy
Stormfist Crusader
12% of 3732 decks +12% synergy
Mahadi, Emporium Master
12% of 3732 decks +12% synergy
Morbid Opportunist
12% of 10897 decks +11% synergy
Gisela, Blade of Goldnight
12% of 353 decks +11% synergy
Coruscation Mage
11% of 2472 decks +11% synergy
Shaile, Dean of Radiance
11% of 1112 decks +11% synergy
Mayhem Devil
11% of 3732 decks +11% synergy
Herald of Secret Streams
11% of 1851 decks +11% synergy
Birds of Paradise
11% of 2804 decks +11% synergy
Killian, Ink Duelist
11% of 1112 decks +11% synergy
Felisa, Fang of Silverquill
11% of 1112 decks +10% synergy
Plaguecrafter
11% of 10897 decks +10% synergy
Gemrazer
11% of 2804 decks +10% synergy
Evolution Sage
11% of 2804 decks +10% synergy
Goblin Anarchomancer
10% of 412 decks +10% synergy
Mr. Orfeo, the Boulder
10% of 412 decks +10% synergy
Razorkin Needlehead
10% of 2243 decks +10% synergy
Breena, the Demagogue
10% of 1112 decks +10% synergy
Hornbash Mentor
10% of 2804 decks +10% synergy
Syr Konrad, the Grim
10% of 10897 decks +10% synergy
Bone-Cairn Butcher
10% of 107 decks +10% synergy
Isshin, Two Heavens as One
10% of 353 decks +10% synergy
Master Biomancer
10% of 384 decks +10% synergy
Crypt Ghast
10% of 10897 decks +10% synergy
Instants
Revitalizing Repast
31% of 1888 decks +30% synergy
Beast Within
29% of 2804 decks +29% synergy
Path to Exile
28% of 1112 decks +28% synergy
Assassin's Trophy
25% of 2804 decks +25% synergy
Bedevil
24% of 3732 decks +24% synergy
Tyvar's Stand
24% of 2804 decks +23% synergy
Fracture
23% of 1112 decks +23% synergy
Golgari Charm
23% of 2804 decks +23% synergy
Hunter's Insight
23% of 2804 decks +23% synergy
Gift of the Viper
22% of 1864 decks +22% synergy
Abrade
22% of 3732 decks +22% synergy
Return of the Wildspeaker
21% of 2804 decks +21% synergy
Undying Malice
21% of 10897 decks +21% synergy
Heroic Intervention
21% of 2804 decks +21% synergy
Village Rites
21% of 10897 decks +20% synergy
Despark
20% of 1112 decks +19% synergy
Feign Death
19% of 10897 decks +19% synergy
Boros Charm
19% of 353 decks +18% synergy
Slip Out the Back
18% of 1851 decks +18% synergy
Return to Nature
18% of 2804 decks +18% synergy
Thrill of Possibility
18% of 3732 decks +17% synergy
Ancient Animus
17% of 2804 decks +17% synergy
Deathsprout
17% of 2804 decks +17% synergy
Solidarity of Heroes
17% of 2804 decks +17% synergy
Oblivion's Hunger
17% of 10897 decks +17% synergy
Arcane Denial
17% of 1851 decks +16% synergy
Mortify
16% of 1112 decks +16% synergy
Supernatural Stamina
16% of 10897 decks +16% synergy
Deadly Dispute
16% of 10897 decks +15% synergy
Lightning Bolt
16% of 3732 decks +15% synergy
Tribute to the Wild
15% of 2804 decks +15% synergy
Bolt Bend
15% of 3732 decks +15% synergy
Brainstorm
15% of 1851 decks +15% synergy
An Offer You Can't Refuse
15% of 1851 decks +14% synergy
Growth Spiral
15% of 384 decks +14% synergy
Malakir Rebirth
14% of 10897 decks +14% synergy
Loran's Escape
14% of 1112 decks +14% synergy
Go for the Throat
14% of 10897 decks +14% synergy
Generous Gift
14% of 1112 decks +14% synergy
Infernal Grasp
14% of 10897 decks +13% synergy
Blacksmith's Skill
14% of 1112 decks +13% synergy
Inscription of Abundance
14% of 2804 decks +13% synergy
Abzan Charm
13% of 232 decks +13% synergy
Opt
13% of 1851 decks +13% synergy
Collective Resistance
13% of 1890 decks +13% synergy
Tragic Slip
13% of 10897 decks +13% synergy
Withering Torment
13% of 6323 decks +13% synergy
Untimely Malfunction
13% of 2219 decks +13% synergy
Not Dead After All
12% of 10624 decks +12% synergy
Inkshield
12% of 1112 decks +12% synergy
Sorceries
Sign in Blood
29% of 10897 decks +28% synergy
Farseek
25% of 2804 decks +24% synergy
Harmonize
24% of 2804 decks +23% synergy
Culling Ritual
23% of 2804 decks +23% synergy
Nature's Lore
23% of 2804 decks +23% synergy
Read the Bones
21% of 10897 decks +20% synergy
Faithless Looting
19% of 3732 decks +19% synergy
Night's Whisper
19% of 10897 decks +19% synergy
Casualties of War
19% of 2804 decks +19% synergy
Vandalblast
17% of 3732 decks +17% synergy
Three Visits
17% of 2804 decks +17% synergy
Tectonic Hazard
17% of 3437 decks +17% synergy
Visions of Dominance
16% of 2804 decks +15% synergy
End the Festivities
15% of 3732 decks +15% synergy
Grapeshot
15% of 3732 decks +15% synergy
Mana Geyser
15% of 3732 decks +15% synergy
Rishkar's Expertise
15% of 2804 decks +15% synergy
Chain Reaction
14% of 3732 decks +14% synergy
Increasing Savagery
14% of 2804 decks +14% synergy
Explore
14% of 2804 decks +14% synergy
Toxic Deluge
13% of 10897 decks +13% synergy
Ruinous Ultimatum
13% of 353 decks +13% synergy
Victimize
12% of 10897 decks +12% synergy
Fangs of Kalonia
12% of 1869 decks +12% synergy
Pick Your Poison
12% of 2280 decks +12% synergy
Scale the Heights
11% of 2804 decks +11% synergy
Diabolic Tutor
11% of 10897 decks +11% synergy
Villainous Wealth
11% of 384 decks +11% synergy
Blazing Volley
11% of 3732 decks +11% synergy
Reanimate
11% of 10897 decks +11% synergy
Secret Rendezvous
11% of 1112 decks +10% synergy
Light Up the Stage
10% of 3732 decks +10% synergy
Silverquill Command
10% of 1112 decks +10% synergy
Austere Command
10% of 1112 decks +10% synergy
Soul's Might
10% of 2804 decks +9% synergy
Ponder
9% of 1851 decks +9% synergy
Exsanguinate
9% of 10897 decks +9% synergy
Rise of the Witch-king
9% of 2804 decks +9% synergy
Humiliate
9% of 1112 decks +9% synergy
Damn
9% of 1112 decks +9% synergy
Smash to Dust
9% of 3732 decks +8% synergy
Chandra's Ignition
9% of 3732 decks +8% synergy
Blot Out the Sky
9% of 1112 decks +8% synergy
Preordain
8% of 1851 decks +8% synergy
Find // Finality
8% of 2804 decks +7% synergy
Search for Tomorrow
8% of 2804 decks +7% synergy
Vindicate
8% of 1112 decks +7% synergy
Migration Path
8% of 2804 decks +7% synergy
Exhilarating Elocution
7% of 1112 decks +7% synergy
Unearth
7% of 10897 decks +7% synergy
Utility Artifacts
Lightning Greaves
22% of 10897 decks +22% synergy
Wayfarer's Bauble
16% of 10897 decks +15% synergy
Jet Medallion
14% of 10897 decks +13% synergy
Ozolith, the Shattered Spire
14% of 2804 decks +13% synergy
Ashnod's Altar
9% of 10897 decks +8% synergy
Mithril Coat
8% of 10897 decks +8% synergy
Skullclamp
7% of 10897 decks +7% synergy
Door to Nothingness
7% of 116 decks +7% synergy
Whispersilk Cloak
7% of 10897 decks +6% synergy
Bontu's Monument
6% of 10897 decks +6% synergy
Power Fist
6% of 2186 decks +6% synergy
Bident of Thassa
6% of 1851 decks +6% synergy
The Ozolith
6% of 10897 decks +5% synergy
Black Mage's Rod
6% of 2029 decks +5% synergy
Unstable Amulet
6% of 2654 decks +5% synergy
Blackblade Reforged
5% of 10897 decks +5% synergy
Enchantments
Hardened Scales
27% of 2804 decks +27% synergy
Hydra's Growth
23% of 2804 decks +22% synergy
Phyrexian Arena
20% of 10897 decks +20% synergy
Rhythm of the Wild
18% of 412 decks +18% synergy
Kaya's Ghostform
15% of 10897 decks +15% synergy
Roiling Vortex
13% of 3732 decks +13% synergy
Vraska Joins Up
13% of 2055 decks +13% synergy
Branching Evolution
13% of 2804 decks +13% synergy
Ghostly Prison
12% of 1112 decks +12% synergy
Ordeal of Nylea
11% of 2804 decks +11% synergy
Hollowmurk Siege
11% of 724 decks +11% synergy
Manabarbs
11% of 3732 decks +11% synergy
Binding the Old Gods
11% of 2804 decks +11% synergy
Rancor
11% of 2804 decks +11% synergy
Spiteful Visions
11% of 3732 decks +10% synergy
Propaganda
10% of 1851 decks +10% synergy
Simic Ascendancy
9% of 384 decks +9% synergy
Fiery Inscription
9% of 3732 decks +9% synergy
Goblin Bombardment
9% of 3732 decks +9% synergy
Impact Tremors
9% of 3732 decks +9% synergy
Deathreap Ritual
9% of 2804 decks +9% synergy
Bastion of Remembrance
8% of 10897 decks +8% synergy
All Will Be One
8% of 3732 decks +8% synergy
Stocking the Pantry
8% of 1681 decks +8% synergy
Shiny Impetus
8% of 3732 decks +8% synergy
Dramatic Finale
8% of 1112 decks +8% synergy
Leyline of the Guildpact
8% of 90 decks +7% synergy
Forced Adaptation
8% of 2804 decks +7% synergy
Snake Umbra
8% of 2804 decks +7% synergy
Moldervine Reclamation
8% of 2804 decks +7% synergy
Duelist's Heritage
8% of 1112 decks +7% synergy
Black Market Connections
8% of 10897 decks +7% synergy
Theater of Horrors
8% of 3732 decks +7% synergy
Wild Growth
8% of 2804 decks +7% synergy
Together Forever
7% of 1112 decks +7% synergy
Black Market
7% of 10897 decks +7% synergy
Annie Joins Up
7% of 84 decks +7% synergy
Felidar Retreat
7% of 1112 decks +7% synergy
Wizard Class
7% of 1851 decks +7% synergy
Abzan Ascendancy
7% of 232 decks +7% synergy
Underworld Dreams
7% of 10897 decks +7% synergy
Blind Obedience
7% of 1112 decks +7% synergy
Vampiric Rites
7% of 10897 decks +6% synergy
Garruk's Uprising
7% of 2804 decks +6% synergy
Curse of Opulence
7% of 3732 decks +6% synergy
Sanguine Bond
7% of 10897 decks +6% synergy
Citadel Siege
6% of 1112 decks +6% synergy
Bred for the Hunt
6% of 384 decks +6% synergy
Fervent Charge
6% of 353 decks +6% synergy
Aqueous Form
6% of 1851 decks +6% synergy
Planeswalkers
Domri, Anarch of Bolas
9% of 412 decks +9% synergy
Geyadrone Dihada
7% of 824 decks +7% synergy
Garruk, Cursed Huntsman
6% of 2804 decks +5% synergy
Professor Onyx
5% of 10897 decks +5% synergy
Utility Lands
Bojuka Bog
30% of 10897 decks +29% synergy
Rogue's Passage
27% of 10897 decks +26% synergy
Reliquary Tower
19% of 10897 decks +19% synergy
Kessig Wolf Run
13% of 412 decks +13% synergy
Cabal Coffers
13% of 10897 decks +13% synergy
Vault of the Archangel
12% of 1112 decks +12% synergy
Llanowar Reborn
12% of 2804 decks +11% synergy
Urborg, Tomb of Yawgmoth
12% of 10897 decks +11% synergy
Witch's Cottage
10% of 10897 decks +10% synergy
Oran-Rief, the Vastwood
10% of 2804 decks +10% synergy
Tyrite Sanctum
10% of 10897 decks +9% synergy
Temple of the False God
9% of 10897 decks +9% synergy
Mortuary Mire
9% of 10897 decks +8% synergy
Cabal Stronghold
8% of 10897 decks +8% synergy
Boseiju, Who Endures
8% of 2804 decks +8% synergy
Barren Moor
8% of 10897 decks +7% synergy
Restless Cottage
7% of 2740 decks +6% synergy
Castle Locthwain
6% of 10897 decks +6% synergy
War Room
6% of 10897 decks +6% synergy
Mystic Sanctuary
6% of 1851 decks +6% synergy
Mosswort Bridge
6% of 2804 decks +6% synergy
Shizo, Death's Storehouse
6% of 10897 decks +6% synergy
Shivan Gorge
6% of 3732 decks +6% synergy
Karn's Bastion
6% of 10897 decks +5% synergy
Gavony Township
6% of 232 decks +5% synergy
Takenuma, Abandoned Mire
5% of 10897 decks +5% synergy
Restless Fortress
5% of 1101 decks +5% synergy
Hissing Quagmire
5% of 2804 decks +5% synergy
Otawara, Soaring City
5% of 1851 decks +5% synergy
Secluded Steppe
5% of 1112 decks +5% synergy
Mana Artifacts
Sol Ring
73% of 10897 decks +73% synergy
Arcane Signet
64% of 10897 decks +64% synergy
Rakdos Signet
51% of 3732 decks +50% synergy
Dimir Signet
37% of 1851 decks +37% synergy
Talisman of Indulgence
35% of 3732 decks +35% synergy
Orzhov Signet
33% of 1112 decks +32% synergy
Talisman of Dominance
32% of 1851 decks +32% synergy
Izzet Signet
31% of 824 decks +31% synergy
Mind Stone
26% of 10897 decks +26% synergy
Talisman of Creativity
26% of 824 decks +26% synergy
Talisman of Hierarchy
22% of 1112 decks +22% synergy
Golgari Signet
21% of 2804 decks +21% synergy
Azorius Signet
20% of 270 decks +20% synergy
Fellwar Stone
19% of 10897 decks +19% synergy
Commander's Sphere
18% of 10897 decks +18% synergy
Talisman of Resilience
18% of 2804 decks +17% synergy
Charcoal Diamond
18% of 10897 decks +17% synergy
Fire Diamond
16% of 3732 decks +16% synergy
Thought Vessel
15% of 10897 decks +15% synergy
Boros Signet
15% of 353 decks +15% synergy
Talisman of Conviction
13% of 353 decks +12% synergy
Gruul Signet
11% of 412 decks +11% synergy
Talisman of Progress
10% of 270 decks +10% synergy
Talisman of Curiosity
9% of 384 decks +9% synergy
Talisman of Impulse
9% of 412 decks +9% synergy
Relic of Sauron
8% of 824 decks +7% synergy
Marble Diamond
7% of 1112 decks +7% synergy
Sky Diamond
7% of 1851 decks +7% synergy
Simic Signet
6% of 384 decks +6% synergy
Timeless Lotus
6% of 116 decks +6% synergy
Midnight Clock
5% of 1851 decks +5% synergy
Lands
Command Tower
56% of 10897 decks +56% synergy
Crumbling Necropolis
55% of 824 decks +55% synergy
Smoldering Marsh
53% of 3732 decks +53% synergy
Sunken Hollow
42% of 1851 decks +42% synergy
Dragonskull Summit
41% of 3732 decks +40% synergy
Woodland Cemetery
37% of 2804 decks +37% synergy
Foreboding Ruins
37% of 3732 decks +37% synergy
Savage Lands
36% of 412 decks +35% synergy
Opulent Palace
35% of 384 decks +35% synergy
Nomad Outpost
34% of 353 decks +34% synergy
Arcane Sanctum
31% of 270 decks +31% synergy
Caves of Koilos
31% of 1112 decks +31% synergy
Rakdos Carnarium
31% of 3732 decks +31% synergy
Llanowar Wastes
31% of 2804 decks +31% synergy
Sandsteppe Citadel
31% of 232 decks +30% synergy
Revitalizing Repast
31% of 1888 decks +30% synergy
Drowned Catacomb
30% of 1851 decks +30% synergy
Temple of Malady
30% of 2804 decks +29% synergy
Golgari Rot Farm
29% of 2804 decks +29% synergy
Cinder Glade
29% of 412 decks +29% synergy
Sulfur Falls
28% of 824 decks +28% synergy
Isolated Chapel
28% of 1112 decks +28% synergy
Temple of Silence
28% of 1112 decks +28% synergy
Temple of Malice
28% of 3732 decks +28% synergy
Tainted Wood
28% of 2804 decks +27% synergy
Xander's Lounge
28% of 824 decks +27% synergy
Jungle Hollow
27% of 2804 decks +27% synergy
Shadowblood Ridge
27% of 3732 decks +27% synergy
Tainted Peak
27% of 3732 decks +27% synergy
Shineshadow Snarl
26% of 1112 decks +26% synergy
Orzhov Basilica
26% of 1112 decks +26% synergy
Sulfurous Springs
26% of 3732 decks +26% synergy
Ziatora's Proving Ground
26% of 412 decks +26% synergy
Overgrown Tomb
25% of 2804 decks +25% synergy
Scoured Barrens
25% of 1112 decks +25% synergy
Shivan Reef
25% of 824 decks +25% synergy
Necroblossom Snarl
25% of 2804 decks +24% synergy
Tainted Field
24% of 1112 decks +24% synergy
Choked Estuary
24% of 1851 decks +24% synergy
Blood Crypt
24% of 3732 decks +24% synergy
Frontier Bivouac
24% of 123 decks +23% synergy
Seething Landscape
23% of 582 decks +23% synergy
Undergrowth Stadium
23% of 2804 decks +23% synergy
Myriad Landscape
23% of 10897 decks +23% synergy
Dimir Aqueduct
23% of 1851 decks +22% synergy
Mystic Monastery
22% of 128 decks +22% synergy
Exotic Orchard
21% of 10897 decks +21% synergy
Temple of Deceit
21% of 1851 decks +21% synergy
Twisted Landscape
21% of 266 decks +21% synergy
Darkwater Catacombs
21% of 1851 decks +21% synergy
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