Professor's Warning (Card)

Professor's Warning
In 11169 decks 0.33% of 3425512 decks
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Shirei, Shizo's Caretaker
12.01% of 6326 decks 760 decks
Sarulf, Realm Eater
28.83% of 2307 decks 665 decks
Ob Nixilis, Captive Kingpin
5.28% of 9048 decks 478 decks
Judith, Carnage Connoisseur
4.14% of 11288 decks 467 decks
Skullbriar, the Walking Grave
5.54% of 7995 decks 443 decks
K'rrik, Son of Yawgmoth
2.46% of 16985 decks 417 decks
Marchesa, the Black Rose
2.96% of 11323 decks 335 decks
Xantcha, Sleeper Agent
5.13% of 4055 decks 208 decks
Tergrid, God of Fright
1.55% of 10453 decks 162 decks
Skithiryx, the Blight Dragon
6.57% of 2207 decks 145 decks
Liliana, Heretical Healer
3.51% of 4135 decks 145 decks
Chatterfang, Squirrel General
0.67% of 20697 decks 138 decks
Sheoldred, the Apocalypse
1.26% of 10073 decks 127 decks
Lord of the Nazgûl
0.89% of 11880 decks 106 decks
Valgavoth, Harrower of Souls
0.54% of 17676 decks 96 decks
Gisa, Glorious Resurrector
7.00% of 1329 decks 93 decks
Tor Wauki the Younger
3.37% of 2732 decks 92 decks
Vren, the Relentless
1.08% of 8156 decks 88 decks
Wilson, Refined Grizzly // Agent of the Shadow Thieves
16.83% of 511 decks 86 decks
Kuja, Genome Sorcerer
0.99% of 8485 decks 84 decks
New Cards
Biosynthic Burst
9% of 316 decks +8% synergy
Terrasymbiosis
7% of 360 decks +6% synergy
Vernal Fen
4% of 356 decks +4% synergy
Festering Thicket
4% of 356 decks +4% synergy
Archenemy's Charm
4% of 1590 decks +3% synergy
High Synergy Cards
Snakeskin Veil
54% of 2837 decks +54% synergy
Cultivate
51% of 2837 decks +51% synergy
Rampant Growth
47% of 2837 decks +47% synergy
Swiftfoot Boots
41% of 11169 decks +41% synergy
Counterspell
40% of 1873 decks +40% synergy
Swords to Plowshares
38% of 1155 decks +38% synergy
Blasphemous Act
38% of 3837 decks +38% synergy
Chaos Warp
37% of 3837 decks +37% synergy
Feed the Swarm
36% of 11169 decks +36% synergy
Dark Ritual
35% of 11169 decks +35% synergy
Top Cards
Gaea's Gift
34% of 2837 decks +34% synergy
Putrefy
34% of 2837 decks +33% synergy
Negate
34% of 1873 decks +33% synergy
Tamiyo's Safekeeping
33% of 2837 decks +33% synergy
Terminate
32% of 3837 decks +32% synergy
Armor of Shadows
32% of 11169 decks +32% synergy
Invigorating Surge
32% of 2837 decks +32% synergy
Rakdos Charm
32% of 3837 decks +32% synergy
Corpsejack Menace
31% of 2837 decks +30% synergy
Kodama's Reach
30% of 2837 decks +30% synergy
Game Changers
Jeska's Will
11% of 3837 decks +10% synergy
Demonic Tutor
10% of 11169 decks +10% synergy
Rhystic Study
10% of 1873 decks +9% synergy
Bolas's Citadel
10% of 11169 decks +9% synergy
Deflecting Swat
9% of 3837 decks +9% synergy
Cyclonic Rift
9% of 1873 decks +8% synergy
Smothering Tithe
8% of 1155 decks +8% synergy
Teferi's Protection
8% of 1155 decks +7% synergy
Vampiric Tutor
7% of 11169 decks +7% synergy
Fierce Guardianship
6% of 1873 decks +5% synergy
Creatures
Forgotten Ancient
28% of 2837 decks +28% synergy
Sakura-Tribe Elder
27% of 2837 decks +26% synergy
Winding Constrictor
26% of 2837 decks +26% synergy
Slippery Bogbonder
23% of 2837 decks +22% synergy
Ignoble Hierarch
22% of 415 decks +22% synergy
Llanowar Elves
21% of 2837 decks +21% synergy
Titanoth Rex
18% of 2837 decks +17% synergy
Cankerbloom
18% of 2837 decks +17% synergy
Kessig Flamebreather
17% of 3837 decks +17% synergy
Kami of Whispered Hopes
17% of 2837 decks +17% synergy
Firebrand Archer
17% of 3837 decks +17% synergy
Storm-Kiln Artist
17% of 3837 decks +16% synergy
Eternal Witness
16% of 2837 decks +16% synergy
Blood Artist
16% of 11169 decks +16% synergy
Gray Merchant of Asphodel
16% of 11169 decks +16% synergy
Reclamation Sage
16% of 2837 decks +15% synergy
Kardur, Doomscourge
16% of 3837 decks +15% synergy
Baleful Strix
15% of 1873 decks +15% synergy
Elvish Mystic
15% of 2837 decks +14% synergy
Guttersnipe
14% of 3837 decks +14% synergy
Duskshell Crawler
14% of 2837 decks +13% synergy
Viscera Seer
13% of 11169 decks +13% synergy
Aurelia, the Warleader
13% of 373 decks +13% synergy
Thermo-Alchemist
13% of 3837 decks +12% synergy
Solemn Simulacrum
13% of 11169 decks +12% synergy
Stormfist Crusader
13% of 3837 decks +12% synergy
Gisela, Blade of Goldnight
12% of 373 decks +12% synergy
Zulaport Cutthroat
12% of 11169 decks +12% synergy
Coruscation Mage
12% of 2714 decks +12% synergy
Mahadi, Emporium Master
12% of 3837 decks +12% synergy
Morbid Opportunist
12% of 11169 decks +12% synergy
Black Waltz No. 3
12% of 906 decks +12% synergy
Mayhem Devil
11% of 3837 decks +11% synergy
Birds of Paradise
11% of 2837 decks +11% synergy
Shaile, Dean of Radiance
11% of 1155 decks +10% synergy
Herald of Secret Streams
11% of 1873 decks +10% synergy
Razorkin Needlehead
11% of 2489 decks +10% synergy
Plaguecrafter
11% of 11169 decks +10% synergy
Killian, Ink Duelist
10% of 1155 decks +10% synergy
Isshin, Two Heavens as One
10% of 373 decks +10% synergy
Mr. Orfeo, the Boulder
10% of 415 decks +10% synergy
Master Biomancer
10% of 396 decks +10% synergy
Syr Konrad, the Grim
10% of 11169 decks +10% synergy
Hornbash Mentor
10% of 2837 decks +10% synergy
Mysidian Elder
10% of 878 decks +10% synergy
Evolution Sage
10% of 2837 decks +10% synergy
Breena, the Demagogue
10% of 1155 decks +10% synergy
Crypt Ghast
10% of 11169 decks +10% synergy
Gemrazer
10% of 2837 decks +10% synergy
Accursed Marauder
10% of 8361 decks +10% synergy
Instants
Revitalizing Repast
31% of 2059 decks +30% synergy
Beast Within
29% of 2837 decks +29% synergy
Path to Exile
28% of 1155 decks +28% synergy
Assassin's Trophy
25% of 2837 decks +25% synergy
Bedevil
24% of 3837 decks +23% synergy
Tyvar's Stand
23% of 2837 decks +23% synergy
Abrade
23% of 3837 decks +22% synergy
Gift of the Viper
23% of 2035 decks +22% synergy
Golgari Charm
22% of 2837 decks +22% synergy
Fracture
22% of 1155 decks +22% synergy
Hunter's Insight
22% of 2837 decks +22% synergy
Return of the Wildspeaker
21% of 2837 decks +21% synergy
Heroic Intervention
21% of 2837 decks +21% synergy
Undying Malice
21% of 11169 decks +20% synergy
Village Rites
20% of 11169 decks +20% synergy
Boros Charm
20% of 373 decks +20% synergy
Feign Death
19% of 11169 decks +19% synergy
Despark
19% of 1155 decks +19% synergy
Slip Out the Back
18% of 1873 decks +18% synergy
Thrill of Possibility
18% of 3837 decks +18% synergy
Return to Nature
17% of 2837 decks +17% synergy
Ancient Animus
17% of 2837 decks +17% synergy
Arcane Denial
17% of 1873 decks +16% synergy
Supernatural Stamina
16% of 11169 decks +16% synergy
Oblivion's Hunger
16% of 11169 decks +16% synergy
Deathsprout
16% of 2837 decks +16% synergy
Mortify
16% of 1155 decks +16% synergy
Solidarity of Heroes
16% of 2837 decks +16% synergy
Deadly Dispute
16% of 11169 decks +16% synergy
Lightning Bolt
16% of 3837 decks +15% synergy
Tribute to the Wild
15% of 2837 decks +15% synergy
Bolt Bend
15% of 3837 decks +15% synergy
Brainstorm
15% of 1873 decks +14% synergy
Growth Spiral
15% of 396 decks +14% synergy
An Offer You Can't Refuse
15% of 1873 decks +14% synergy
Loran's Escape
15% of 1155 decks +14% synergy
Malakir Rebirth
14% of 11169 decks +14% synergy
Go for the Throat
14% of 11169 decks +14% synergy
Generous Gift
14% of 1155 decks +14% synergy
Infernal Grasp
14% of 11169 decks +14% synergy
Opt
14% of 1873 decks +13% synergy
Untimely Malfunction
13% of 2466 decks +13% synergy
Blacksmith's Skill
13% of 1155 decks +13% synergy
Abzan Charm
13% of 243 decks +13% synergy
Withering Torment
13% of 7073 decks +13% synergy
Collective Resistance
13% of 2061 decks +13% synergy
Tragic Slip
13% of 11169 decks +13% synergy
Inscription of Abundance
13% of 2837 decks +12% synergy
Not Dead After All
13% of 11169 decks +12% synergy
Void Rend
12% of 282 decks +12% synergy
Sorceries
Sign in Blood
29% of 11169 decks +28% synergy
Farseek
25% of 2837 decks +24% synergy
Harmonize
23% of 2837 decks +23% synergy
Culling Ritual
23% of 2837 decks +23% synergy
Nature's Lore
23% of 2837 decks +22% synergy
Read the Bones
20% of 11169 decks +20% synergy
Faithless Looting
20% of 3837 decks +20% synergy
Night's Whisper
19% of 11169 decks +19% synergy
Casualties of War
19% of 2837 decks +19% synergy
Vandalblast
17% of 3837 decks +17% synergy
Three Visits
17% of 2837 decks +16% synergy
Tectonic Hazard
17% of 3670 decks +16% synergy
End the Festivities
16% of 3837 decks +15% synergy
Visions of Dominance
15% of 2837 decks +15% synergy
Mana Geyser
15% of 3837 decks +14% synergy
Grapeshot
15% of 3837 decks +14% synergy
Rishkar's Expertise
14% of 2837 decks +14% synergy
Ruinous Ultimatum
14% of 373 decks +14% synergy
Explore
14% of 2837 decks +14% synergy
Chain Reaction
14% of 3837 decks +13% synergy
Increasing Savagery
14% of 2837 decks +13% synergy
Toxic Deluge
13% of 11169 decks +13% synergy
Fangs of Kalonia
13% of 2040 decks +12% synergy
Victimize
12% of 11169 decks +12% synergy
Pick Your Poison
12% of 2448 decks +12% synergy
Reanimate
11% of 11169 decks +11% synergy
Blazing Volley
11% of 3837 decks +11% synergy
Diabolic Tutor
11% of 11169 decks +11% synergy
Scale the Heights
11% of 2837 decks +11% synergy
Villainous Wealth
10% of 396 decks +10% synergy
Austere Command
10% of 1155 decks +10% synergy
Light Up the Stage
10% of 3837 decks +10% synergy
Secret Rendezvous
10% of 1155 decks +10% synergy
Silverquill Command
10% of 1155 decks +9% synergy
Soul's Might
9% of 2837 decks +9% synergy
Exsanguinate
9% of 11169 decks +9% synergy
Ponder
9% of 1873 decks +9% synergy
Rise of the Witch-king
9% of 2837 decks +9% synergy
Chandra's Ignition
9% of 3837 decks +8% synergy
Smash to Dust
9% of 3837 decks +8% synergy
Damn
9% of 1155 decks +8% synergy
Humiliate
8% of 1155 decks +8% synergy
Blot Out the Sky
8% of 1155 decks +8% synergy
Preordain
8% of 1873 decks +8% synergy
Vindicate
8% of 1155 decks +7% synergy
Find // Finality
8% of 2837 decks +7% synergy
Search for Tomorrow
7% of 2837 decks +7% synergy
Exhilarating Elocution
7% of 1155 decks +7% synergy
Migration Path
7% of 2837 decks +7% synergy
Unearth
7% of 11169 decks +7% synergy
Utility Artifacts
Lightning Greaves
22% of 11169 decks +22% synergy
Wayfarer's Bauble
15% of 11169 decks +15% synergy
Jet Medallion
14% of 11169 decks +14% synergy
Ozolith, the Shattered Spire
13% of 2837 decks +13% synergy
Ashnod's Altar
9% of 11169 decks +8% synergy
Mithril Coat
8% of 11169 decks +8% synergy
Door to Nothingness
8% of 120 decks +7% synergy
Skullclamp
7% of 11169 decks +7% synergy
Whispersilk Cloak
7% of 11169 decks +6% synergy
Bontu's Monument
6% of 11169 decks +6% synergy
Power Fist
6% of 2356 decks +6% synergy
Bident of Thassa
6% of 1873 decks +5% synergy
Unstable Amulet
6% of 2891 decks +5% synergy
The Ozolith
6% of 11169 decks +5% synergy
Black Mage's Rod
6% of 2912 decks +5% synergy
The Darkness Crystal
5% of 2912 decks +5% synergy
Tarrian's Soulcleaver
5% of 10689 decks +5% synergy
Blackblade Reforged
5% of 11169 decks +5% synergy
Enchantments
Hardened Scales
27% of 2837 decks +27% synergy
Hydra's Growth
22% of 2837 decks +22% synergy
Phyrexian Arena
20% of 11169 decks +20% synergy
Rhythm of the Wild
18% of 415 decks +17% synergy
Kaya's Ghostform
15% of 11169 decks +15% synergy
Vraska Joins Up
13% of 2224 decks +13% synergy
Roiling Vortex
13% of 3837 decks +13% synergy
Branching Evolution
13% of 2837 decks +13% synergy
Hollowmurk Siege
12% of 918 decks +12% synergy
Ghostly Prison
12% of 1155 decks +11% synergy
Ordeal of Nylea
11% of 2837 decks +11% synergy
Leyline of the Guildpact
11% of 99 decks +11% synergy
Binding the Old Gods
11% of 2837 decks +10% synergy
Manabarbs
11% of 3837 decks +10% synergy
Propaganda
11% of 1873 decks +10% synergy
Spiteful Visions
11% of 3837 decks +10% synergy
Rancor
11% of 2837 decks +10% synergy
Fiery Inscription
9% of 3837 decks +9% synergy
Simic Ascendancy
9% of 396 decks +9% synergy
All-Out Assault
9% of 144 decks +9% synergy
Impact Tremors
9% of 3837 decks +9% synergy
Deathreap Ritual
9% of 2837 decks +9% synergy
Goblin Bombardment
9% of 3837 decks +8% synergy
Bastion of Remembrance
8% of 11169 decks +8% synergy
All Will Be One
8% of 3837 decks +8% synergy
Shiny Impetus
8% of 3837 decks +8% synergy
Stocking the Pantry
8% of 1855 decks +7% synergy
Black Market Connections
8% of 11169 decks +7% synergy
Wild Growth
8% of 2837 decks +7% synergy
Moldervine Reclamation
8% of 2837 decks +7% synergy
Dramatic Finale
8% of 1155 decks +7% synergy
Snake Umbra
7% of 2837 decks +7% synergy
Forced Adaptation
7% of 2837 decks +7% synergy
Black Market
7% of 11169 decks +7% synergy
Theater of Horrors
7% of 3837 decks +7% synergy
Duelist's Heritage
7% of 1155 decks +7% synergy
Felidar Retreat
7% of 1155 decks +7% synergy
Together Forever
7% of 1155 decks +7% synergy
Underworld Dreams
7% of 11169 decks +6% synergy
Blind Obedience
7% of 1155 decks +6% synergy
Garruk's Uprising
7% of 2837 decks +6% synergy
Wizard Class
7% of 1873 decks +6% synergy
Vampiric Rites
7% of 11169 decks +6% synergy
Maelstrom Nexus
7% of 120 decks +6% synergy
Sanguine Bond
7% of 11169 decks +6% synergy
Curse of Opulence
7% of 3837 decks +6% synergy
Annie Joins Up
6% of 93 decks +6% synergy
Bred for the Hunt
6% of 396 decks +6% synergy
Citadel Siege
6% of 1155 decks +6% synergy
Abzan Ascendancy
6% of 243 decks +6% synergy
Planeswalkers
Domri, Anarch of Bolas
9% of 415 decks +9% synergy
Geyadrone Dihada
6% of 833 decks +6% synergy
Garruk, Cursed Huntsman
5% of 2837 decks +5% synergy
Professor Onyx
5% of 11169 decks +5% synergy
Utility Lands
Bojuka Bog
30% of 11169 decks +29% synergy
Rogue's Passage
27% of 11169 decks +26% synergy
Reliquary Tower
19% of 11169 decks +19% synergy
Kessig Wolf Run
13% of 415 decks +13% synergy
Cabal Coffers
13% of 11169 decks +13% synergy
Vault of the Archangel
13% of 1155 decks +12% synergy
Llanowar Reborn
11% of 2837 decks +11% synergy
Urborg, Tomb of Yawgmoth
11% of 11169 decks +11% synergy
Witch's Cottage
10% of 11169 decks +10% synergy
Lindblum, Industrial Regency
10% of 939 decks +9% synergy
Oran-Rief, the Vastwood
9% of 2837 decks +9% synergy
Tyrite Sanctum
9% of 11169 decks +9% synergy
Temple of the False God
9% of 11169 decks +9% synergy
Mortuary Mire
9% of 11169 decks +8% synergy
Cabal Stronghold
8% of 11169 decks +8% synergy
Boseiju, Who Endures
8% of 2837 decks +8% synergy
Barren Moor
7% of 11169 decks +7% synergy
Restless Cottage
7% of 2837 decks +6% synergy
War Room
6% of 11169 decks +6% synergy
Castle Locthwain
6% of 11169 decks +6% synergy
Mosswort Bridge
6% of 2837 decks +6% synergy
Shivan Gorge
6% of 3837 decks +6% synergy
Shizo, Death's Storehouse
6% of 11169 decks +6% synergy
Mystic Sanctuary
6% of 1873 decks +6% synergy
Karn's Bastion
6% of 11169 decks +5% synergy
Gavony Township
5% of 243 decks +5% synergy
Secluded Steppe
5% of 1155 decks +5% synergy
Takenuma, Abandoned Mire
5% of 11169 decks +5% synergy
Restless Fortress
5% of 1155 decks +5% synergy
Hissing Quagmire
5% of 2837 decks +5% synergy
Mana Artifacts
Sol Ring
73% of 11169 decks +73% synergy
Arcane Signet
64% of 11169 decks +64% synergy
Rakdos Signet
50% of 3837 decks +50% synergy
Dimir Signet
37% of 1873 decks +37% synergy
Talisman of Indulgence
36% of 3837 decks +35% synergy
Orzhov Signet
32% of 1155 decks +32% synergy
Talisman of Dominance
32% of 1873 decks +31% synergy
Izzet Signet
31% of 833 decks +31% synergy
Talisman of Creativity
27% of 833 decks +26% synergy
Mind Stone
26% of 11169 decks +26% synergy
Talisman of Hierarchy
22% of 1155 decks +22% synergy
Golgari Signet
21% of 2837 decks +21% synergy
Azorius Signet
20% of 282 decks +19% synergy
Fellwar Stone
19% of 11169 decks +18% synergy
Commander's Sphere
18% of 11169 decks +17% synergy
Talisman of Resilience
18% of 2837 decks +17% synergy
Charcoal Diamond
18% of 11169 decks +17% synergy
Thought Vessel
16% of 11169 decks +15% synergy
Fire Diamond
16% of 3837 decks +15% synergy
Boros Signet
15% of 373 decks +14% synergy
Talisman of Conviction
14% of 373 decks +14% synergy
Gruul Signet
11% of 415 decks +10% synergy
Talisman of Progress
10% of 282 decks +10% synergy
Talisman of Curiosity
10% of 396 decks +10% synergy
Talisman of Impulse
8% of 415 decks +8% synergy
Marble Diamond
7% of 1155 decks +7% synergy
Sky Diamond
7% of 1873 decks +7% synergy
Relic of Sauron
7% of 833 decks +7% synergy
Simic Signet
6% of 396 decks +6% synergy
Selesnya Signet
5% of 243 decks +5% synergy
Timeless Lotus
5% of 120 decks +5% synergy
Lands
Command Tower
56% of 11169 decks +56% synergy
Crumbling Necropolis
55% of 833 decks +55% synergy
Smoldering Marsh
53% of 3837 decks +52% synergy
Dragonskull Summit
42% of 3837 decks +41% synergy
Sunken Hollow
41% of 1873 decks +41% synergy
Woodland Cemetery
38% of 2837 decks +37% synergy
Foreboding Ruins
37% of 3837 decks +37% synergy
Savage Lands
35% of 415 decks +35% synergy
Nomad Outpost
35% of 373 decks +35% synergy
Opulent Palace
35% of 396 decks +35% synergy
Llanowar Wastes
31% of 2837 decks +31% synergy
Arcane Sanctum
31% of 282 decks +31% synergy
Revitalizing Repast
31% of 2059 decks +30% synergy
Caves of Koilos
31% of 1155 decks +30% synergy
Rakdos Carnarium
31% of 3837 decks +30% synergy
Sandsteppe Citadel
30% of 243 decks +30% synergy
Drowned Catacomb
30% of 1873 decks +30% synergy
Cinder Glade
30% of 415 decks +29% synergy
Temple of Malady
30% of 2837 decks +29% synergy
Sulfur Falls
30% of 833 decks +29% synergy
Golgari Rot Farm
29% of 2837 decks +29% synergy
Isolated Chapel
29% of 1155 decks +29% synergy
Tainted Wood
28% of 2837 decks +28% synergy
Temple of Malice
28% of 3837 decks +27% synergy
Temple of Silence
28% of 1155 decks +27% synergy
Xander's Lounge
27% of 833 decks +27% synergy
Tainted Peak
27% of 3837 decks +27% synergy
Shadowblood Ridge
27% of 3837 decks +27% synergy
Jungle Hollow
27% of 2837 decks +27% synergy
Sulfurous Springs
27% of 3837 decks +27% synergy
Shineshadow Snarl
26% of 1155 decks +26% synergy
Orzhov Basilica
26% of 1155 decks +25% synergy
Ziatora's Proving Ground
25% of 415 decks +25% synergy
Necroblossom Snarl
25% of 2837 decks +25% synergy
Overgrown Tomb
25% of 2837 decks +25% synergy
Scoured Barrens
25% of 1155 decks +25% synergy
Shivan Reef
25% of 833 decks +24% synergy
Frontier Bivouac
24% of 127 decks +24% synergy
Blood Crypt
24% of 3837 decks +23% synergy
Tainted Field
24% of 1155 decks +23% synergy
Choked Estuary
24% of 1873 decks +23% synergy
Seething Landscape
23% of 624 decks +23% synergy
Undergrowth Stadium
23% of 2837 decks +22% synergy
Myriad Landscape
23% of 11169 decks +22% synergy
Dimir Aqueduct
22% of 1873 decks +22% synergy
Twisted Landscape
22% of 284 decks +22% synergy
Exotic Orchard
22% of 11169 decks +21% synergy
Temple of Deceit
22% of 1873 decks +21% synergy
Mystic Monastery
21% of 132 decks +21% synergy
Haunted Ridge
21% of 3837 decks +21% synergy