Grenzo, Dungeon Warden (Commander) - Relentless Rats

Grenzo, Dungeon Warden
Rank #551
30decks
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Ethan Coover
Apr 15, 2026
Ethan Coover
The Best X-Cost Spell Combos in Commander
With the Quandrix school of Strixhaven so focused on X spells, now seems like a good time to run through the top X spell combo cards.
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Relentless Rats
100%inclusion30 decks30 decks
100%synergy
Heartstone
70%inclusion21 decks30 decks
68%synergy
Thrumming Stone
60%inclusion18 decks30 decks
60%synergy
Marrow-Gnawer
53%inclusion16 decks30 decks
53%synergy
Piper of the Swarm
50%inclusion15 decks30 decks
49%synergy
Crypt Ghast
50%inclusion15 decks30 decks
47%synergy
Braid of Fire
47%inclusion14 decks30 decks
45%synergy
Crucible of Worlds
43%inclusion13 decks30 decks
43%synergy
Tomb Trawler
43%inclusion13 decks30 decks
43%synergy
The Cauldron of Eternity
43%inclusion13 decks30 decks
42%synergy
Top Cards
Gray Merchant of Asphodel
43%inclusion13 decks30 decks
33%synergy
Mana Echoes
40%inclusion12 decks30 decks
39%synergy
Anger
37%inclusion11 decks30 decks
24%synergy
Hoverstone Pilgrim
33%inclusion10 decks30 decks
33%synergy
Lightning Greaves
33%inclusion10 decks30 decks
-2%synergy
Patriarch's Bidding
30%inclusion9 decks30 decks
27%synergy
Teferi's Puzzle Box
30%inclusion9 decks30 decks
29%synergy
Palladium Myr
30%inclusion9 decks30 decks
29%synergy
Crystal Ball
30%inclusion9 decks30 decks
30%synergy
Bedevil
30%inclusion9 decks30 decks
-5%synergy
Game Changers
Ancient Tomb
20%inclusion6 decks30 decks
11%synergy
Demonic Tutor
17%inclusion5 decks30 decks
-1%synergy
Vampiric Tutor
13%inclusion4 decks30 decks
0%synergy
Jeska's Will
10%inclusion3 decks30 decks
-13%synergy
Bolas's Citadel
6.7%inclusion2 decks30 decks
-4%synergy
Creatures
The Walls of Ba Sing Se
100%inclusion1 decks1 decks
99%synergy
Weftstalker Ardent
50%inclusion1 decks2 decks
47%synergy
Leaden Myr
30%inclusion9 decks30 decks
28%synergy
Ogre Slumlord
27%inclusion8 decks30 decks
25%synergy
Iron Myr
27%inclusion8 decks30 decks
24%synergy
Karumonix, the Rat King
27%inclusion8 decks30 decks
26%synergy
Bronze Walrus
23%inclusion7 decks30 decks
23%synergy
Junktroller
23%inclusion7 decks30 decks
23%synergy
Solemn Simulacrum
20%inclusion6 decks30 decks
0%synergy
Barkform Harvester
17%inclusion3 decks18 decks
16%synergy
Ayara, First of Locthwain
17%inclusion5 decks30 decks
15%synergy
Tuktuk Rubblefort
17%inclusion5 decks30 decks
16%synergy
Priest of Gix
17%inclusion5 decks30 decks
14%synergy
Crypt Rats
13%inclusion4 decks30 decks
13%synergy
Pack Rat
13%inclusion4 decks30 decks
13%synergy
Pitiless Plunderer
13%inclusion4 decks30 decks
1%synergy
Ratcatcher
13%inclusion4 decks30 decks
13%synergy
K'rrik, Son of Yawgmoth
13%inclusion4 decks30 decks
10%synergy
Totentanz, Swarm Piper
13%inclusion4 decks30 decks
12%synergy
Duplicant
13%inclusion4 decks30 decks
13%synergy
Valley Rotcaller
11%inclusion2 decks18 decks
10%synergy
Hedron Crawler
10%inclusion3 decks30 decks
10%synergy
Ornithopter of Paradise
10%inclusion3 decks30 decks
6%synergy
Burnished Hart
10%inclusion3 decks30 decks
5%synergy
Ashcoat of the Shadow Swarm
10%inclusion3 decks30 decks
10%synergy
Tattered Ratter
10%inclusion3 decks30 decks
10%synergy
General Kreat, the Boltbringer
10%inclusion1 decks10 decks
8%synergy
Priest of Urabrask
10%inclusion3 decks30 decks
8%synergy
Alloy Myr
10%inclusion3 decks30 decks
10%synergy
Tinybones, Bauble Burglar
10%inclusion1 decks10 decks
9%synergy
The Lord of Pain
9.1%inclusion1 decks11 decks
-1%synergy
Enduring Courage
9.1%inclusion1 decks11 decks
6%synergy
Molten Gatekeeper
8.7%inclusion2 decks23 decks
6%synergy
Boggart Trawler
8.3%inclusion2 decks24 decks
1%synergy
Metallic Mimic
6.7%inclusion2 decks30 decks
5%synergy
Blood Artist
6.7%inclusion2 decks30 decks
-12%synergy
Brash Taunter
6.7%inclusion2 decks30 decks
-3%synergy
Lord Skitter's Butcher
6.7%inclusion2 decks30 decks
6%synergy
Imperial Recruiter
6.7%inclusion2 decks30 decks
2%synergy
Species Specialist
6.7%inclusion2 decks30 decks
6%synergy
Faceless Butcher
6.7%inclusion2 decks30 decks
6%synergy
Dockside Extortionist
6.7%inclusion2 decks30 decks
5%synergy
Obosh, the Preypiercer
6.7%inclusion2 decks30 decks
5%synergy
Mogis's Marauder
6.7%inclusion2 decks30 decks
7%synergy
Ravenous Chupacabra
6.7%inclusion2 decks30 decks
4%synergy
Goblin Welder
6.7%inclusion2 decks30 decks
4%synergy
Kiki-Jiki, Mirror Breaker
6.7%inclusion2 decks30 decks
2%synergy
Ulamog, the Infinite Gyre
6.7%inclusion2 decks30 decks
5%synergy
Workhorse
6.7%inclusion2 decks30 decks
6%synergy
Hellraiser Goblin
6.7%inclusion2 decks30 decks
7%synergy
Instants
Valakut Awakening
33%inclusion10 decks30 decks
26%synergy
Terminate
27%inclusion8 decks30 decks
-13%synergy
Deadly Rollick
20%inclusion6 decks30 decks
-1%synergy
Chaos Warp
20%inclusion6 decks30 decks
-28%synergy
Deflecting Swat
17%inclusion5 decks30 decks
-4%synergy
Volcanic Spite
13%inclusion4 decks30 decks
13%synergy
Dark Ritual
13%inclusion4 decks30 decks
-29%synergy
Fire Prophecy
13%inclusion4 decks30 decks
13%synergy
Withering Torment
9.1%inclusion1 decks11 decks
-13%synergy
Fell the Profane
8.0%inclusion2 decks25 decks
-4%synergy
Go for the Throat
6.7%inclusion2 decks30 decks
-1%synergy
Rakdos Charm
6.7%inclusion2 decks30 decks
-37%synergy
Bitter Triumph
6.7%inclusion2 decks30 decks
2%synergy
Malakir Rebirth
6.7%inclusion2 decks30 decks
-9%synergy
Sorceries
Blasphemous Act
27%inclusion8 decks30 decks
-24%synergy
Feed the Swarm
23%inclusion7 decks30 decks
-18%synergy
Vandalblast
20%inclusion6 decks30 decks
-10%synergy
Toxic Deluge
20%inclusion6 decks30 decks
2%synergy
Echoing Return
17%inclusion5 decks30 decks
17%synergy
Living Death
17%inclusion5 decks30 decks
13%synergy
Kindred Dominance
13%inclusion4 decks30 decks
11%synergy
Grim Tutor
13%inclusion4 decks30 decks
9%synergy
Diabolic Intent
10%inclusion3 decks30 decks
2%synergy
Diabolic Tutor
10%inclusion3 decks30 decks
4%synergy
Song of Totentanz
10%inclusion3 decks30 decks
7%synergy
Damnation
10%inclusion3 decks30 decks
3%synergy
Into the Fire
10%inclusion3 decks30 decks
9%synergy
Sundering Eruption
8.0%inclusion2 decks25 decks
3%synergy
Faithless Looting
6.7%inclusion2 decks30 decks
-21%synergy
Read the Bones
6.7%inclusion2 decks30 decks
-6%synergy
Buried Alive
6.7%inclusion2 decks30 decks
2%synergy
Kindred Charge
6.7%inclusion2 decks30 decks
6%synergy
Plague of Vermin
6.7%inclusion2 decks30 decks
6%synergy
Utility Artifacts
Illusionist's Bracers
23%inclusion7 decks30 decks
23%synergy
Coat of Arms
23%inclusion7 decks30 decks
23%synergy
Mirror Box
20%inclusion6 decks30 decks
17%synergy
Ashnod's Altar
20%inclusion6 decks30 decks
9%synergy
Vanquisher's Banner
17%inclusion5 decks30 decks
14%synergy
Swiftfoot Boots
17%inclusion5 decks30 decks
-15%synergy
Reito Lantern
17%inclusion5 decks30 decks
16%synergy
Wayfarer's Bauble
13%inclusion4 decks30 decks
0%synergy
Darksteel Pendant
13%inclusion4 decks30 decks
13%synergy
Expedition Map
13%inclusion4 decks30 decks
12%synergy
Jet Medallion
13%inclusion4 decks30 decks
6%synergy
Skullclamp
10%inclusion3 decks30 decks
0%synergy
Cloak and Dagger
10%inclusion3 decks30 decks
10%synergy
Akroma's Memorial
10%inclusion3 decks30 decks
10%synergy
Herald's Horn
10%inclusion3 decks30 decks
6%synergy
Desecrated Tomb
6.7%inclusion2 decks30 decks
6%synergy
Treasure Map
6.7%inclusion2 decks30 decks
6%synergy
Tel-Jilad Stylus
6.7%inclusion2 decks30 decks
6%synergy
Phyrexian Altar
6.7%inclusion2 decks30 decks
1%synergy
Enchantments
Shared Animosity
27%inclusion8 decks30 decks
23%synergy
Black Market
17%inclusion5 decks30 decks
12%synergy
Fervor
17%inclusion5 decks30 decks
15%synergy
Phyrexian Arena
17%inclusion5 decks30 decks
-7%synergy
Impact Tremors
13%inclusion4 decks30 decks
2%synergy
Warstorm Surge
10%inclusion3 decks30 decks
6%synergy
Mirror March
10%inclusion3 decks30 decks
8%synergy
Cover of Darkness
10%inclusion3 decks30 decks
9%synergy
Molten Echoes
6.7%inclusion2 decks30 decks
4%synergy
Fires of Invention
6.7%inclusion2 decks30 decks
6%synergy
Rising of the Day
6.7%inclusion2 decks30 decks
2%synergy
Oversold Cemetery
6.7%inclusion2 decks30 decks
5%synergy
Utility Lands
Nykthos, Shrine to Nyx
40%inclusion12 decks30 decks
38%synergy
Urborg, Tomb of Yawgmoth
33%inclusion10 decks30 decks
15%synergy
Cabal Coffers
27%inclusion8 decks30 decks
17%synergy
Zhalfirin Void
23%inclusion7 decks30 decks
22%synergy
Buried Ruin
17%inclusion5 decks30 decks
13%synergy
Swarmyard
17%inclusion5 decks30 decks
16%synergy
Cabal Stronghold
13%inclusion4 decks30 decks
13%synergy
Isolated Watchtower
13%inclusion4 decks30 decks
13%synergy
Crypt of Agadeem
13%inclusion4 decks30 decks
13%synergy
Reliquary Tower
13%inclusion4 decks30 decks
-5%synergy
Phyrexian Tower
10%inclusion3 decks30 decks
-1%synergy
Inventors' Fair
10%inclusion3 decks30 decks
8%synergy
Bojuka Bog
6.7%inclusion2 decks30 decks
-29%synergy
Urza's Saga
6.7%inclusion2 decks30 decks
1%synergy
Restless Vents
6.7%inclusion2 decks30 decks
2%synergy
Command Beacon
6.7%inclusion2 decks30 decks
0%synergy
Takenuma, Abandoned Mire
6.7%inclusion2 decks30 decks
-2%synergy
Temple of the False God
6.7%inclusion2 decks30 decks
-3%synergy
Great Furnace
6.7%inclusion2 decks30 decks
0%synergy
Three Tree City
5.6%inclusion1 decks18 decks
2%synergy
Mana Artifacts
Sol Ring
77%inclusion23 decks30 decks
-9%synergy
Arcane Signet
47%inclusion14 decks30 decks
-35%synergy
Rakdos Signet
40%inclusion12 decks30 decks
-18%synergy
Thran Turbine
40%inclusion12 decks30 decks
39%synergy
Talisman of Indulgence
23%inclusion7 decks30 decks
-32%synergy
Mana Crypt
10%inclusion3 decks30 decks
9%synergy
Mox Amber
10%inclusion3 decks30 decks
6%synergy
Thought Vessel
10%inclusion3 decks30 decks
-8%synergy
Nyx Lotus
10%inclusion3 decks30 decks
10%synergy
Everflowing Chalice
6.7%inclusion2 decks30 decks
4%synergy
Commander's Sphere
6.7%inclusion2 decks30 decks
-10%synergy
Fellwar Stone
6.7%inclusion2 decks30 decks
-27%synergy
Thran Dynamo
6.7%inclusion2 decks30 decks
2%synergy
Mind Stone
6.7%inclusion2 decks30 decks
-22%synergy
Patchwork Banner
5.6%inclusion1 decks18 decks
2%synergy
Lands
Swamp
100%inclusion30 decks30 decks
2%synergy
Mountain
93%inclusion28 decks30 decks
-4%synergy
Command Tower
63%inclusion19 decks30 decks
-23%synergy
Dragonskull Summit
53%inclusion16 decks30 decks
-10%synergy
Smoldering Marsh
50%inclusion15 decks30 decks
-13%synergy
Blood Crypt
50%inclusion15 decks30 decks
4%synergy
Temple of Malice
43%inclusion13 decks30 decks
10%synergy
Tainted Peak
33%inclusion10 decks30 decks
-9%synergy
Valakut Awakening
33%inclusion10 decks30 decks
26%synergy
Foreboding Ruins
30%inclusion9 decks30 decks
-16%synergy
Sulfurous Springs
30%inclusion9 decks30 decks
-17%synergy
Bloodstained Mire
30%inclusion9 decks30 decks
-3%synergy
Graven Cairns
27%inclusion8 decks30 decks
-4%synergy
Luxury Suite
27%inclusion8 decks30 decks
-11%synergy
Blightstep Pathway
27%inclusion8 decks30 decks
4%synergy
Raucous Theater
23%inclusion7 decks30 decks
2%synergy
Crystal Grotto
23%inclusion7 decks30 decks
23%synergy
Canyon Slough
20%inclusion6 decks30 decks
0%synergy
Haunted Ridge
20%inclusion6 decks30 decks
-16%synergy
Shadowblood Ridge
17%inclusion5 decks30 decks
-18%synergy
Myriad Landscape
17%inclusion5 decks30 decks
-1%synergy
The Grey Havens
17%inclusion5 decks30 decks
16%synergy
Rakdos Carnarium
13%inclusion4 decks30 decks
-18%synergy
Badlands
13%inclusion4 decks30 decks
0%synergy
Blackcleave Cliffs
13%inclusion4 decks30 decks
-7%synergy
Evolving Wilds
10%inclusion3 decks30 decks
-11%synergy
Opal Palace
10%inclusion3 decks30 decks
9%synergy
Path of Ancestry
10%inclusion3 decks30 decks
-6%synergy
Polluted Delta
10%inclusion3 decks30 decks
2%synergy
Blazemire Verge
9.1%inclusion1 decks11 decks
-21%synergy
Boggart Trawler
8.3%inclusion2 decks24 decks
1%synergy
Fell the Profane
8.0%inclusion2 decks25 decks
-4%synergy
Sundering Eruption
8.0%inclusion2 decks25 decks
3%synergy
Exotic Orchard
6.7%inclusion2 decks30 decks
-24%synergy
Bloodfell Caves
6.7%inclusion2 decks30 decks
-12%synergy
Sulfurous Mire
6.7%inclusion2 decks30 decks
3%synergy
Plaza of Heroes
6.7%inclusion2 decks30 decks
5%synergy
Malakir Rebirth
6.7%inclusion2 decks30 decks
-9%synergy
Marsh Flats
6.7%inclusion2 decks30 decks
-1%synergy
Geothermal Bog
6.7%inclusion2 decks30 decks
-3%synergy
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