Grenzo, Dungeon Warden (Commander) - Upgraded ETB

Grenzo, Dungeon Warden
Rank #543
4decks
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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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Enchantments
Utility Lands
Mana Artifacts
Lands
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Undead Hand Ninja
50%inclusion1 decks2 decks
50%synergy
High Synergy Cards
Solemn Simulacrum
100%inclusion4 decks4 decks
81%synergy
Game Changers
Jeska's Will
25%inclusion1 decks4 decks
2%synergy
Ancient Tomb
25%inclusion1 decks4 decks
16%synergy
Field of the Dead
25%inclusion1 decks4 decks
24%synergy
Braids, Cabal Minion
25%inclusion1 decks4 decks
25%synergy
Creatures
Gray Merchant of Asphodel
75%inclusion3 decks4 decks
65%synergy
Meteor Golem
75%inclusion3 decks4 decks
73%synergy
Boggart Trawler
75%inclusion3 decks4 decks
68%synergy
Twilight Diviner
67%inclusion2 decks3 decks
65%synergy
Palladium Myr
50%inclusion2 decks4 decks
49%synergy
Barkform Harvester
50%inclusion2 decks4 decks
49%synergy
Junktroller
50%inclusion2 decks4 decks
49%synergy
Fleshbag Marauder
50%inclusion2 decks4 decks
47%synergy
Twilight Prophet
50%inclusion2 decks4 decks
47%synergy
Flayer of the Hatebound
50%inclusion2 decks4 decks
49%synergy
Pilgrim's Eye
50%inclusion2 decks4 decks
50%synergy
Unstoppable Slasher
50%inclusion2 decks4 decks
48%synergy
Deathbringer Thoctar
50%inclusion2 decks4 decks
49%synergy
Puppeteer Clique
50%inclusion2 decks4 decks
49%synergy
Priest of Gix
50%inclusion2 decks4 decks
48%synergy
Plaguecrafter
50%inclusion2 decks4 decks
46%synergy
Accursed Marauder
50%inclusion2 decks4 decks
45%synergy
Shriekmaw
50%inclusion2 decks4 decks
48%synergy
Bronze Walrus
50%inclusion2 decks4 decks
50%synergy
Kardur, Doomscourge
50%inclusion2 decks4 decks
32%synergy
Workhorse
50%inclusion2 decks4 decks
49%synergy
Brash Taunter
50%inclusion2 decks4 decks
40%synergy
Havoc Eater
50%inclusion2 decks4 decks
50%synergy
Ravenous Chupacabra
50%inclusion2 decks4 decks
48%synergy
Duplicant
50%inclusion2 decks4 decks
49%synergy
Pinnacle Monk
50%inclusion2 decks4 decks
43%synergy
Fury
50%inclusion2 decks4 decks
49%synergy
Iron Myr
50%inclusion2 decks4 decks
48%synergy
Sinister Gnarlbark
33%inclusion1 decks3 decks
33%synergy
Oft-Nabbed Goat
33%inclusion1 decks3 decks
32%synergy
Eclipsed Boggart
33%inclusion1 decks3 decks
29%synergy
Lavaleaper
33%inclusion1 decks3 decks
32%synergy
Changeling Wayfinder
33%inclusion1 decks3 decks
32%synergy
Blazing Firesinger
33%inclusion1 decks3 decks
32%synergy
Arnyn, Deathbloom Botanist
33%inclusion1 decks3 decks
33%synergy
Grim Servant
25%inclusion1 decks4 decks
24%synergy
Dusk Urchins
25%inclusion1 decks4 decks
25%synergy
Gruesome Scourger
25%inclusion1 decks4 decks
25%synergy
Young Necromancer
25%inclusion1 decks4 decks
25%synergy
Syr Konrad, the Grim
25%inclusion1 decks4 decks
16%synergy
Goblin Matron
25%inclusion1 decks4 decks
21%synergy
Lyzolda, the Blood Witch
25%inclusion1 decks4 decks
25%synergy
Tree of Perdition
25%inclusion1 decks4 decks
24%synergy
Ogre Slumlord
25%inclusion1 decks4 decks
24%synergy
Guiltfeeder
25%inclusion1 decks4 decks
25%synergy
Gravedigger
25%inclusion1 decks4 decks
25%synergy
Phyrexian Dragon Engine
25%inclusion1 decks4 decks
23%synergy
Mindclaw Shaman
25%inclusion1 decks4 decks
25%synergy
Metamorphosis Fanatic
25%inclusion1 decks4 decks
24%synergy
Ruthless Knave
25%inclusion1 decks4 decks
24%synergy
Instants
Valakut Awakening
75%inclusion3 decks4 decks
67%synergy
Fell the Profane
50%inclusion2 decks4 decks
37%synergy
Chaos Warp
50%inclusion2 decks4 decks
3%synergy
Dark Ritual
50%inclusion2 decks4 decks
7%synergy
Rakdos Charm
50%inclusion2 decks4 decks
7%synergy
Deadly Rollick
25%inclusion1 decks4 decks
3%synergy
Volcanic Spite
25%inclusion1 decks4 decks
25%synergy
Return the Favor
25%inclusion1 decks4 decks
17%synergy
Imp's Mischief
25%inclusion1 decks4 decks
16%synergy
Battle Hymn
25%inclusion1 decks4 decks
23%synergy
Spikefield Hazard
25%inclusion1 decks4 decks
23%synergy
Darkness
25%inclusion1 decks4 decks
23%synergy
Malakir Rebirth
25%inclusion1 decks4 decks
10%synergy
Deflecting Swat
25%inclusion1 decks4 decks
3%synergy
Bolt Bend
25%inclusion1 decks4 decks
14%synergy
Saw in Half
25%inclusion1 decks4 decks
13%synergy
Sorceries
Mana Geyser
75%inclusion3 decks4 decks
62%synergy
Blasphemous Act
50%inclusion2 decks4 decks
-1%synergy
Improvisation Capstone
33%inclusion1 decks3 decks
30%synergy
Diabolic Intent
25%inclusion1 decks4 decks
17%synergy
Revive the Fallen
25%inclusion1 decks4 decks
25%synergy
Final Act
25%inclusion1 decks4 decks
24%synergy
Sinister Waltz
25%inclusion1 decks4 decks
24%synergy
Read the Bones
25%inclusion1 decks4 decks
13%synergy
Living Death
25%inclusion1 decks4 decks
21%synergy
Stomping Slabs
25%inclusion1 decks4 decks
25%synergy
Bloodsoaked Insight
25%inclusion1 decks4 decks
17%synergy
Zof Consumption
25%inclusion1 decks4 decks
25%synergy
Into the Fire
25%inclusion1 decks4 decks
24%synergy
Sozin's Comet
25%inclusion1 decks4 decks
22%synergy
Utility Artifacts
Ashnod's Altar
75%inclusion3 decks4 decks
65%synergy
Tel-Jilad Stylus
75%inclusion3 decks4 decks
74%synergy
Teferi's Puzzle Box
50%inclusion2 decks4 decks
49%synergy
Panharmonicon
50%inclusion2 decks4 decks
49%synergy
Heartstone
50%inclusion2 decks4 decks
48%synergy
Planetarium of Wan Shi Tong
50%inclusion2 decks4 decks
50%synergy
Desecrated Tomb
25%inclusion1 decks4 decks
24%synergy
Treasure Map
25%inclusion1 decks4 decks
24%synergy
Illusionist's Bracers
25%inclusion1 decks4 decks
24%synergy
Chainsaw
25%inclusion1 decks4 decks
23%synergy
Darksteel Pendant
25%inclusion1 decks4 decks
25%synergy
Palantír of Orthanc
25%inclusion1 decks4 decks
24%synergy
Shadowspear
25%inclusion1 decks4 decks
21%synergy
Sword of Hearth and Home
25%inclusion1 decks4 decks
23%synergy
The Cauldron of Eternity
25%inclusion1 decks4 decks
24%synergy
Crystal Ball
25%inclusion1 decks4 decks
25%synergy
Champion's Helm
25%inclusion1 decks4 decks
23%synergy
Swiftfoot Boots
25%inclusion1 decks4 decks
-6%synergy
Sword of Feast and Famine
25%inclusion1 decks4 decks
24%synergy
Enchantments
Teval's Judgment
50%inclusion2 decks4 decks
49%synergy
Ripples of Undeath
25%inclusion1 decks4 decks
22%synergy
Flameshadow Conjuring
25%inclusion1 decks4 decks
22%synergy
Braid of Fire
25%inclusion1 decks4 decks
23%synergy
No Mercy
25%inclusion1 decks4 decks
22%synergy
Demonic Embrace
25%inclusion1 decks4 decks
25%synergy
Utility Lands
Bojuka Bog
75%inclusion3 decks4 decks
39%synergy
Buried Ruin
50%inclusion2 decks4 decks
47%synergy
Urborg, Tomb of Yawgmoth
50%inclusion2 decks4 decks
31%synergy
Shizo, Death's Storehouse
25%inclusion1 decks4 decks
20%synergy
Miren, the Moaning Well
25%inclusion1 decks4 decks
25%synergy
Witch's Clinic
25%inclusion1 decks4 decks
17%synergy
Hanweir Battlements
25%inclusion1 decks4 decks
24%synergy
Zhalfirin Void
25%inclusion1 decks4 decks
24%synergy
Ghost Quarter
25%inclusion1 decks4 decks
24%synergy
The Black Gate
25%inclusion1 decks4 decks
22%synergy
Scavenger Grounds
25%inclusion1 decks4 decks
23%synergy
Spymaster's Vault
25%inclusion1 decks4 decks
22%synergy
Cabal Coffers
25%inclusion1 decks4 decks
16%synergy
High Market
25%inclusion1 decks4 decks
21%synergy
Castle Locthwain
25%inclusion1 decks4 decks
19%synergy
Fire Nation Palace
25%inclusion1 decks4 decks
20%synergy
Mana Artifacts
Sol Ring
75%inclusion3 decks4 decks
-11%synergy
Arcane Signet
50%inclusion2 decks4 decks
-32%synergy
Rakdos Signet
25%inclusion1 decks4 decks
-32%synergy
Fellwar Stone
25%inclusion1 decks4 decks
-8%synergy
Thran Dynamo
25%inclusion1 decks4 decks
21%synergy
Victory Chimes
25%inclusion1 decks4 decks
24%synergy
The Soul Stone
25%inclusion1 decks4 decks
20%synergy
Bender's Waterskin
25%inclusion1 decks4 decks
22%synergy
Lands
Command Tower
100%inclusion4 decks4 decks
14%synergy
Blood Crypt
100%inclusion4 decks4 decks
52%synergy
Swamp
100%inclusion4 decks4 decks
2%synergy
Dragonskull Summit
100%inclusion4 decks4 decks
36%synergy
Mountain
100%inclusion4 decks4 decks
2%synergy
Canyon Slough
75%inclusion3 decks4 decks
55%synergy
Graven Cairns
75%inclusion3 decks4 decks
43%synergy
Boggart Trawler
75%inclusion3 decks4 decks
68%synergy
Temple of Malice
75%inclusion3 decks4 decks
43%synergy
Blazemire Verge
75%inclusion3 decks4 decks
44%synergy
Haunted Ridge
75%inclusion3 decks4 decks
39%synergy
Valakut Awakening
75%inclusion3 decks4 decks
67%synergy
Raucous Theater
50%inclusion2 decks4 decks
28%synergy
Fell the Profane
50%inclusion2 decks4 decks
37%synergy
Rakdos Carnarium
50%inclusion2 decks4 decks
20%synergy
Exotic Orchard
50%inclusion2 decks4 decks
19%synergy
Smoldering Marsh
50%inclusion2 decks4 decks
-14%synergy
Luxury Suite
50%inclusion2 decks4 decks
12%synergy
The Grey Havens
50%inclusion2 decks4 decks
49%synergy
Blightstep Pathway
50%inclusion2 decks4 decks
28%synergy
Crystal Grotto
50%inclusion2 decks4 decks
49%synergy
Pinnacle Monk
50%inclusion2 decks4 decks
43%synergy
Sulfurous Springs
50%inclusion2 decks4 decks
2%synergy
Bloodstained Mire
50%inclusion2 decks4 decks
16%synergy
Fabled Passage
25%inclusion1 decks4 decks
16%synergy
Terramorphic Expanse
25%inclusion1 decks4 decks
10%synergy
Myriad Landscape
25%inclusion1 decks4 decks
8%synergy
Reflecting Pool
25%inclusion1 decks4 decks
22%synergy
Spikefield Hazard
25%inclusion1 decks4 decks
23%synergy
Demolition Field
25%inclusion1 decks4 decks
22%synergy
Plaza of Heroes
25%inclusion1 decks4 decks
23%synergy
Malakir Rebirth
25%inclusion1 decks4 decks
10%synergy
Evolving Wilds
25%inclusion1 decks4 decks
5%synergy
Akoum Warrior
25%inclusion1 decks4 decks
24%synergy
Tainted Peak
25%inclusion1 decks4 decks
-18%synergy
Bloodsoaked Insight
25%inclusion1 decks4 decks
17%synergy
Abstergo Entertainment
25%inclusion1 decks4 decks
25%synergy
Snow-Covered Swamp
25%inclusion1 decks4 decks
22%synergy
Zof Consumption
25%inclusion1 decks4 decks
25%synergy
Study Hall
25%inclusion1 decks4 decks
25%synergy
Rumble Arena
25%inclusion1 decks4 decks
25%synergy
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