Toxrill, the Corrosive (Commander) - Upgraded -1/-1 Counters

Alternate Names:

Gary, the SnailGary, the Snail

Toxrill, the Corrosive
Rank #246
47decks
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Background image for The Best Horror Combos in Commander
Ethan Coover
Oct 20, 2025
Ethan Coover
The Best Horror Combos in Commander
There are plenty of Horror creatures in Magic, but which are the best at comboing? In honor of Halloween, Ethan Coover lists the best 10.
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Sludge Monster
79%inclusion37 decks47 decks
71%synergy
Massacre Wurm
72%inclusion34 decks47 decks
64%synergy
Thrummingbird
64%inclusion30 decks47 decks
61%synergy
Karn's Bastion
62%inclusion29 decks47 decks
59%synergy
Maha, Its Feathers Night
61%inclusion28 decks46 decks
58%synergy
Flatline
60%inclusion28 decks47 decks
57%synergy
Mass Diminish
57%inclusion27 decks47 decks
55%synergy
Blood Artist
60%inclusion28 decks47 decks
55%synergy
Polymorphist's Jest
55%inclusion26 decks47 decks
53%synergy
Inexorable Tide
55%inclusion26 decks47 decks
53%synergy
Top Cards
Counterspell
79%inclusion37 decks47 decks
23%synergy
Dark Ritual
66%inclusion31 decks47 decks
31%synergy
Lightning Greaves
57%inclusion27 decks47 decks
30%synergy
Black Market
55%inclusion26 decks47 decks
50%synergy
Flux Channeler
55%inclusion26 decks47 decks
53%synergy
Massacre Girl, Known Killer
53%inclusion25 decks47 decks
50%synergy
Syr Konrad, the Grim
51%inclusion24 decks47 decks
38%synergy
Slaughter Specialist
51%inclusion24 decks47 decks
50%synergy
Toxic Deluge
51%inclusion24 decks47 decks
25%synergy
Drown in Ichor
51%inclusion24 decks47 decks
49%synergy
Game Changers
Rhystic Study
30%inclusion14 decks47 decks
5%synergy
Cyclonic Rift
21%inclusion10 decks47 decks
-3%synergy
Notion Thief
19%inclusion9 decks47 decks
7%synergy
Demonic Tutor
17%inclusion8 decks47 decks
-3%synergy
Bolas's Citadel
13%inclusion6 decks47 decks
7%synergy
Orcish Bowmasters
8.5%inclusion4 decks47 decks
1%synergy
The One Ring
6.4%inclusion3 decks47 decks
-1%synergy
Force of Will
6.4%inclusion3 decks47 decks
-5%synergy
Fierce Guardianship
6.4%inclusion3 decks47 decks
-13%synergy
Mystical Tutor
6.4%inclusion3 decks47 decks
-8%synergy
Creatures
Mirkwood Bats
47%inclusion22 decks47 decks
42%synergy
Morbid Opportunist
47%inclusion22 decks47 decks
43%synergy
Tekuthal, Inquiry Dominus
47%inclusion22 decks47 decks
45%synergy
Clackbridge Troll
43%inclusion20 decks47 decks
41%synergy
Yawgmoth, Thran Physician
40%inclusion19 decks47 decks
39%synergy
Hunted Phantasm
36%inclusion17 decks47 decks
35%synergy
Gisa, Glorious Resurrector
32%inclusion15 decks47 decks
29%synergy
Zulaport Cutthroat
30%inclusion14 decks47 decks
26%synergy
Scheming Aspirant
30%inclusion14 decks47 decks
29%synergy
Deepglow Skate
28%inclusion13 decks47 decks
27%synergy
Solemn Simulacrum
26%inclusion12 decks47 decks
13%synergy
Ayara, First of Locthwain
26%inclusion12 decks47 decks
22%synergy
Drivnod, Carnage Dominus
26%inclusion12 decks47 decks
24%synergy
Spark Double
26%inclusion12 decks47 decks
15%synergy
Crypt Ghast
26%inclusion12 decks47 decks
23%synergy
Dreamtide Whale
26%inclusion12 decks47 decks
24%synergy
Necroskitter
23%inclusion11 decks47 decks
23%synergy
Spitting Dilophosaurus
21%inclusion10 decks47 decks
20%synergy
Massacre Girl
21%inclusion10 decks47 decks
18%synergy
Burnished Hart
17%inclusion8 decks47 decks
14%synergy
Blightbelly Rat
17%inclusion8 decks47 decks
16%synergy
Hullbreaker Horror
17%inclusion8 decks47 decks
1%synergy
Baleful Strix
15%inclusion7 decks47 decks
-8%synergy
Corrosive Mentor
15%inclusion7 decks47 decks
15%synergy
Akroan Horse
15%inclusion7 decks47 decks
15%synergy
Yahenni, Undying Partisan
15%inclusion7 decks47 decks
14%synergy
Voidwing Hybrid
13%inclusion6 decks47 decks
12%synergy
Guildpact Informant
13%inclusion6 decks47 decks
12%synergy
Pitiless Plunderer
13%inclusion6 decks47 decks
10%synergy
Persistent Constrictor
11%inclusion5 decks45 decks
10%synergy
Vedalken Humiliator
11%inclusion5 decks47 decks
10%synergy
Nadier's Nightblade
11%inclusion5 decks47 decks
9%synergy
K'rrik, Son of Yawgmoth
11%inclusion5 decks47 decks
10%synergy
Midnight Banshee
11%inclusion5 decks47 decks
10%synergy
Fumulus, the Infestation
9.1%inclusion4 decks44 decks
9%synergy
Enduring Curiosity
8.9%inclusion4 decks45 decks
4%synergy
Sheoldred, the Apocalypse
8.5%inclusion4 decks47 decks
4%synergy
Hunted Horror
8.5%inclusion4 decks47 decks
5%synergy
Viral Drake
8.5%inclusion4 decks47 decks
8%synergy
Hunted Bonebrute
8.5%inclusion4 decks47 decks
8%synergy
Charix, the Raging Isle
8.5%inclusion4 decks47 decks
6%synergy
Grazilaxx, Illithid Scholar
8.5%inclusion4 decks47 decks
-2%synergy
Braids, Arisen Nightmare
8.5%inclusion4 decks47 decks
6%synergy
Dauthi Voidwalker
8.5%inclusion4 decks47 decks
-4%synergy
Kels, Fight Fixer
8.5%inclusion4 decks47 decks
8%synergy
Sephiroth, Planet's Heir
6.8%inclusion3 decks44 decks
6%synergy
The Mindskinner
6.7%inclusion3 decks45 decks
0%synergy
Rottenmouth Viper
6.5%inclusion3 decks46 decks
6%synergy
Venser, Corpse Puppet
6.4%inclusion3 decks47 decks
6%synergy
Xanathar, Guild Kingpin
6.4%inclusion3 decks47 decks
5%synergy
Instants
Negate
47%inclusion22 decks47 decks
14%synergy
An Offer You Can't Refuse
43%inclusion20 decks47 decks
13%synergy
Sudden Spoiling
40%inclusion19 decks47 decks
38%synergy
Experimental Augury
38%inclusion18 decks47 decks
36%synergy
Whisper of the Dross
36%inclusion17 decks47 decks
35%synergy
Swan Song
32%inclusion15 decks47 decks
14%synergy
Reject Imperfection
30%inclusion14 decks47 decks
29%synergy
Arcane Denial
28%inclusion13 decks47 decks
2%synergy
Pongify
23%inclusion11 decks47 decks
9%synergy
Mana Drain
23%inclusion11 decks47 decks
6%synergy
Withering Torment
22%inclusion10 decks45 decks
6%synergy
Brainstorm
21%inclusion10 decks47 decks
-9%synergy
Malakir Rebirth
21%inclusion10 decks47 decks
12%synergy
Grim Affliction
19%inclusion9 decks47 decks
18%synergy
Radstorm
19%inclusion9 decks47 decks
18%synergy
Cabal Ritual
17%inclusion8 decks47 decks
12%synergy
Fuel for the Cause
17%inclusion8 decks47 decks
16%synergy
Steady Progress
17%inclusion8 decks47 decks
16%synergy
Tragic Slip
15%inclusion7 decks47 decks
11%synergy
Rapid Hybridization
13%inclusion6 decks47 decks
2%synergy
Vraska's Fall
13%inclusion6 decks47 decks
11%synergy
Feign Death
13%inclusion6 decks47 decks
11%synergy
Refute
11%inclusion5 decks44 decks
9%synergy
Fell the Profane
11%inclusion5 decks47 decks
-5%synergy
Drown in the Loch
11%inclusion5 decks47 decks
-8%synergy
Prologue to Phyresis
11%inclusion5 decks47 decks
9%synergy
Countersquall
11%inclusion5 decks47 decks
4%synergy
Daze
11%inclusion5 decks47 decks
10%synergy
Strix Serenade
11%inclusion5 decks47 decks
6%synergy
Serum Snare
11%inclusion5 decks47 decks
9%synergy
Force of Despair
8.5%inclusion4 decks47 decks
5%synergy
Deadly Dispute
8.5%inclusion4 decks47 decks
2%synergy
Supernatural Stamina
8.5%inclusion4 decks47 decks
7%synergy
Infernal Grasp
8.5%inclusion4 decks47 decks
-7%synergy
Sink into Stupor
8.5%inclusion4 decks47 decks
-7%synergy
Dismember
8.5%inclusion4 decks47 decks
2%synergy
Magic Damper
6.9%inclusion2 decks29 decks
6%synergy
Overkill
6.7%inclusion2 decks30 decks
4%synergy
Frantic Search
6.4%inclusion3 decks47 decks
-12%synergy
Undying Evil
6.4%inclusion3 decks47 decks
6%synergy
Mindbreak Trap
6.4%inclusion3 decks47 decks
2%synergy
Culling the Weak
6.4%inclusion3 decks47 decks
4%synergy
Disallow
6.4%inclusion3 decks47 decks
5%synergy
Undying Malice
6.4%inclusion3 decks47 decks
5%synergy
Murder
6.4%inclusion3 decks47 decks
-1%synergy
Snap
6.4%inclusion3 decks47 decks
-4%synergy
Black Sun's Twilight
6.4%inclusion3 decks47 decks
6%synergy
Whirlwind Denial
6.4%inclusion3 decks47 decks
6%synergy
Mana Leak
6.4%inclusion3 decks47 decks
3%synergy
Spell Pierce
6.4%inclusion3 decks47 decks
0%synergy
Sorceries
Tezzeret's Gambit
49%inclusion23 decks47 decks
46%synergy
Contentious Plan
38%inclusion18 decks47 decks
36%synergy
Feed the Swarm
34%inclusion16 decks47 decks
-2%synergy
Diabolic Tutor
28%inclusion13 decks47 decks
21%synergy
Asinine Antics
21%inclusion10 decks47 decks
20%synergy
Reanimate
21%inclusion10 decks47 decks
-3%synergy
Black Sun's Zenith
19%inclusion9 decks47 decks
17%synergy
Curse of the Swine
19%inclusion9 decks47 decks
16%synergy
Vat Emergence
17%inclusion8 decks47 decks
16%synergy
Ponder
15%inclusion7 decks47 decks
-1%synergy
Victimize
13%inclusion6 decks47 decks
-1%synergy
Mutilate
11%inclusion5 decks47 decks
10%synergy
Sign in Blood
11%inclusion5 decks47 decks
4%synergy
Ravenform
11%inclusion5 decks47 decks
8%synergy
Rise of the Dark Realms
11%inclusion5 decks47 decks
1%synergy
Phyresis Outbreak
8.5%inclusion4 decks47 decks
8%synergy
Night's Whisper
8.5%inclusion4 decks47 decks
2%synergy
Sandman's Quicksand
6.7%inclusion1 decks15 decks
6%synergy
Gitaxian Probe
6.4%inclusion3 decks47 decks
1%synergy
Read the Bones
6.4%inclusion3 decks47 decks
2%synergy
Temporal Mastery
6.4%inclusion3 decks47 decks
3%synergy
Blood Money
6.4%inclusion3 decks47 decks
4%synergy
Irenicus's Vile Duplication
6.4%inclusion3 decks47 decks
1%synergy
Inevitable Betrayal
6.4%inclusion3 decks47 decks
6%synergy
Massacre
6.4%inclusion3 decks47 decks
6%synergy
Damnation
6.4%inclusion3 decks47 decks
-4%synergy
Grim Tutor
6.4%inclusion3 decks47 decks
2%synergy
Utility Artifacts
Swiftfoot Boots
49%inclusion23 decks47 decks
25%synergy
Skullclamp
40%inclusion19 decks47 decks
31%synergy
Contagion Clasp
32%inclusion15 decks47 decks
30%synergy
Jet Medallion
30%inclusion14 decks47 decks
22%synergy
Genesis Chamber
28%inclusion13 decks47 decks
27%synergy
Contagion Engine
28%inclusion13 decks47 decks
26%synergy
Kormus Bell
28%inclusion13 decks47 decks
27%synergy
Mithril Coat
17%inclusion8 decks47 decks
13%synergy
Ashnod's Altar
17%inclusion8 decks47 decks
10%synergy
Wayfarer's Bauble
13%inclusion6 decks47 decks
-2%synergy
Bontu's Monument
13%inclusion6 decks47 decks
9%synergy
The Darkness Crystal
9.1%inclusion3 decks33 decks
5%synergy
Neurok Stealthsuit
8.5%inclusion4 decks47 decks
7%synergy
Sapphire Medallion
8.5%inclusion4 decks47 decks
2%synergy
Peter Parker's Camera
6.7%inclusion1 decks15 decks
6%synergy
Sword of Truth and Justice
6.4%inclusion3 decks47 decks
6%synergy
Wishclaw Talisman
6.4%inclusion3 decks47 decks
2%synergy
Phyrexian Altar
6.4%inclusion3 decks47 decks
1%synergy
Whispersilk Cloak
6.4%inclusion3 decks47 decks
0%synergy
Netherborn Altar
6.4%inclusion3 decks47 decks
6%synergy
Dowsing Dagger
6.4%inclusion3 decks47 decks
5%synergy
Enchantments
The Meathook Massacre
45%inclusion21 decks47 decks
39%synergy
Propaganda
43%inclusion20 decks47 decks
27%synergy
Revel in Riches
30%inclusion14 decks47 decks
28%synergy
Nest of Scarabs
28%inclusion13 decks47 decks
27%synergy
Phyrexian Arena
28%inclusion13 decks47 decks
14%synergy
Blowfly Infestation
19%inclusion9 decks47 decks
19%synergy
Crumbling Ashes
17%inclusion8 decks47 decks
16%synergy
Witness Protection
17%inclusion8 decks47 decks
15%synergy
Grave Betrayal
15%inclusion7 decks47 decks
13%synergy
Grave Pact
13%inclusion6 decks47 decks
7%synergy
Blessing of Leeches
11%inclusion5 decks47 decks
10%synergy
Kaya's Ghostform
11%inclusion5 decks47 decks
8%synergy
Imprisoned in the Moon
8.5%inclusion4 decks47 decks
5%synergy
Dictate of Erebos
8.5%inclusion4 decks47 decks
6%synergy
Mystic Remora
8.5%inclusion4 decks47 decks
-7%synergy
Infernal Genesis
8.5%inclusion4 decks47 decks
8%synergy
Black Market Connections
8.5%inclusion4 decks47 decks
-2%synergy
Diplomatic Immunity
8.5%inclusion4 decks47 decks
7%synergy
Phyrexian Reclamation
6.4%inclusion3 decks47 decks
5%synergy
Amphibian Downpour
6.4%inclusion3 decks47 decks
4%synergy
Animate Dead
6.4%inclusion3 decks47 decks
-5%synergy
Eaten by Piranhas
6.4%inclusion3 decks47 decks
4%synergy
Bastion of Remembrance
6.4%inclusion3 decks47 decks
4%synergy
Planeswalkers
Vraska, Betrayal's Sting
38%inclusion18 decks47 decks
37%synergy
Ashiok, Dream Render
6.4%inclusion3 decks47 decks
0%synergy
Utility Lands
Bojuka Bog
53%inclusion25 decks47 decks
14%synergy
Reliquary Tower
53%inclusion25 decks47 decks
17%synergy
Urborg, Tomb of Yawgmoth
30%inclusion14 decks47 decks
10%synergy
Cabal Coffers
26%inclusion12 decks47 decks
15%synergy
Command Beacon
21%inclusion10 decks47 decks
17%synergy
Temple of the False God
19%inclusion9 decks47 decks
9%synergy
Phyrexian Tower
15%inclusion7 decks47 decks
9%synergy
Mortuary Mire
13%inclusion6 decks47 decks
5%synergy
Rogue's Passage
13%inclusion6 decks47 decks
-15%synergy
Westvale Abbey
11%inclusion5 decks47 decks
10%synergy
Mystic Sanctuary
11%inclusion5 decks47 decks
-7%synergy
Castle Locthwain
11%inclusion5 decks47 decks
7%synergy
Otawara, Soaring City
11%inclusion5 decks47 decks
-8%synergy
Midgar, City of Mako
10%inclusion3 decks29 decks
7%synergy
Halimar Depths
8.5%inclusion4 decks47 decks
2%synergy
Creeping Tar Pit
6.4%inclusion3 decks47 decks
-2%synergy
Memorial to Folly
6.4%inclusion3 decks47 decks
6%synergy
Nykthos, Shrine to Nyx
6.4%inclusion3 decks47 decks
4%synergy
Takenuma, Abandoned Mire
6.4%inclusion3 decks47 decks
-7%synergy
Restless Reef
6.4%inclusion3 decks47 decks
-1%synergy
Mana Artifacts
Sol Ring
96%inclusion45 decks47 decks
7%synergy
Arcane Signet
85%inclusion40 decks47 decks
1%synergy
Talisman of Dominance
60%inclusion28 decks47 decks
1%synergy
Dimir Signet
53%inclusion25 decks47 decks
-8%synergy
Thought Vessel
36%inclusion17 decks47 decks
4%synergy
Everflowing Chalice
30%inclusion14 decks47 decks
24%synergy
Commander's Sphere
30%inclusion14 decks47 decks
12%synergy
Mind Stone
26%inclusion12 decks47 decks
-4%synergy
Fellwar Stone
21%inclusion10 decks47 decks
-10%synergy
Replicating Ring
17%inclusion8 decks47 decks
16%synergy
Thran Dynamo
17%inclusion8 decks47 decks
12%synergy
Staff of Compleation
15%inclusion7 decks47 decks
14%synergy
Charcoal Diamond
15%inclusion7 decks47 decks
6%synergy
Sky Diamond
13%inclusion6 decks47 decks
4%synergy
Decanter of Endless Water
13%inclusion6 decks47 decks
8%synergy
Midnight Clock
11%inclusion5 decks47 decks
3%synergy
Lotus Petal
8.5%inclusion4 decks47 decks
1%synergy
Gilded Lotus
8.5%inclusion4 decks47 decks
6%synergy
Worn Powerstone
8.5%inclusion4 decks47 decks
5%synergy
Glistening Sphere
6.4%inclusion3 decks47 decks
6%synergy
The Soul Stone
5.9%inclusion1 decks17 decks
1%synergy
Lands
Swamp
98%inclusion46 decks47 decks
2%synergy
Island
96%inclusion45 decks47 decks
-1%synergy
Command Tower
91%inclusion43 decks47 decks
4%synergy
Sunken Hollow
64%inclusion30 decks47 decks
-2%synergy
Shipwreck Marsh
53%inclusion25 decks47 decks
14%synergy
Drowned Catacomb
51%inclusion24 decks47 decks
-1%synergy
Choked Estuary
51%inclusion24 decks47 decks
3%synergy
Dimir Aqueduct
47%inclusion22 decks47 decks
7%synergy
Darkwater Catacombs
45%inclusion21 decks47 decks
5%synergy
Watery Grave
45%inclusion21 decks47 decks
-2%synergy
Morphic Pool
40%inclusion19 decks47 decks
4%synergy
Underground River
38%inclusion18 decks47 decks
-1%synergy
Tainted Isle
36%inclusion17 decks47 decks
-8%synergy
Exotic Orchard
36%inclusion17 decks47 decks
3%synergy
Temple of Deceit
36%inclusion17 decks47 decks
0%synergy
Polluted Delta
34%inclusion16 decks47 decks
3%synergy
Dismal Backwater
30%inclusion14 decks47 decks
14%synergy
Evolving Wilds
28%inclusion13 decks47 decks
11%synergy
Gloomlake Verge
27%inclusion12 decks45 decks
4%synergy
Clearwater Pathway
26%inclusion12 decks47 decks
1%synergy
Fetid Pools
26%inclusion12 decks47 decks
9%synergy
Forbidden Orchard
26%inclusion12 decks47 decks
23%synergy
Myriad Landscape
23%inclusion11 decks47 decks
0%synergy
Darkslick Shores
23%inclusion11 decks47 decks
9%synergy
Terramorphic Expanse
21%inclusion10 decks47 decks
10%synergy
Malakir Rebirth
21%inclusion10 decks47 decks
12%synergy
Contaminated Aquifer
17%inclusion8 decks47 decks
11%synergy
Sunken Ruins
17%inclusion8 decks47 decks
2%synergy
Jwar Isle Refuge
15%inclusion7 decks47 decks
9%synergy
Fabled Passage
13%inclusion6 decks47 decks
5%synergy
Fell the Profane
11%inclusion5 decks47 decks
-5%synergy
Waterfront District
11%inclusion5 decks47 decks
7%synergy
Undercity Sewers
8.5%inclusion4 decks47 decks
-11%synergy
Mistvault Bridge
8.5%inclusion4 decks47 decks
4%synergy
Dimir Guildgate
8.5%inclusion4 decks47 decks
2%synergy
Sink into Stupor
8.5%inclusion4 decks47 decks
-7%synergy
Thriving Moor
8.5%inclusion4 decks47 decks
7%synergy
Murky Sewer
6.7%inclusion3 decks45 decks
5%synergy
Vibrant Cityscape
6.7%inclusion1 decks15 decks
5%synergy
Ice Tunnel
6.4%inclusion3 decks47 decks
1%synergy
Urza's Cave
6.4%inclusion3 decks47 decks
5%synergy
Underground Sea
6.4%inclusion3 decks47 decks
-6%synergy
Reflecting Pool
6.4%inclusion3 decks47 decks
1%synergy
Thriving Isle
6.4%inclusion3 decks47 decks
4%synergy
Boggart Trawler
6.4%inclusion3 decks47 decks
0%synergy
Soured Springs
6.4%inclusion3 decks47 decks
3%synergy
Waterlogged Teachings
6.4%inclusion3 decks47 decks
-5%synergy
Submerged Boneyard
6.4%inclusion3 decks47 decks
2%synergy
City of Brass
6.4%inclusion3 decks47 decks
0%synergy
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