Grenzo, Dungeon Warden (Commander) - Expensive Burn

Grenzo, Dungeon Warden
Rank #552
3decks
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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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Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Utility Lands
Mana Artifacts
Lands
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Opposition Agent
100%inclusion3 decks3 decks
95%synergy
Ancient Tomb
100%inclusion3 decks3 decks
91%synergy
Chrome Mox
100%inclusion3 decks3 decks
94%synergy
Mox Diamond
100%inclusion3 decks3 decks
96%synergy
Mana Vault
67%inclusion2 decks3 decks
61%synergy
Demonic Tutor
67%inclusion2 decks3 decks
49%synergy
Orcish Bowmasters
67%inclusion2 decks3 decks
56%synergy
Vampiric Tutor
67%inclusion2 decks3 decks
53%synergy
Jeska's Will
33%inclusion1 decks3 decks
10%synergy
Imperial Seal
33%inclusion1 decks3 decks
28%synergy
Creatures
Barkform Harvester
100%inclusion3 decks3 decks
99%synergy
Zealous Conscripts
100%inclusion3 decks3 decks
98%synergy
Kiki-Jiki, Mirror Breaker
100%inclusion3 decks3 decks
96%synergy
Murderous Redcap
100%inclusion3 decks3 decks
96%synergy
Pitiless Plunderer
100%inclusion3 decks3 decks
87%synergy
Workhorse
100%inclusion3 decks3 decks
99%synergy
Goblin Engineer
100%inclusion3 decks3 decks
96%synergy
Priest of Gix
100%inclusion3 decks3 decks
98%synergy
Priest of Urabrask
100%inclusion3 decks3 decks
98%synergy
Pinnacle Monk
100%inclusion3 decks3 decks
93%synergy
Viscera Seer
100%inclusion3 decks3 decks
91%synergy
Grim Servant
67%inclusion2 decks3 decks
66%synergy
Metallic Mimic
67%inclusion2 decks3 decks
65%synergy
Agate Instigator
67%inclusion2 decks3 decks
63%synergy
Blood Artist
67%inclusion2 decks3 decks
48%synergy
Overeager Apprentice
67%inclusion2 decks3 decks
66%synergy
Ardent Electromancer
67%inclusion2 decks3 decks
67%synergy
Simian Spirit Guide
67%inclusion2 decks3 decks
61%synergy
Mayhem Devil
67%inclusion2 decks3 decks
43%synergy
Fleshwrither
67%inclusion2 decks3 decks
67%synergy
Imperial Recruiter
67%inclusion2 decks3 decks
62%synergy
Hoverstone Pilgrim
67%inclusion2 decks3 decks
66%synergy
Skittering Precursor
67%inclusion2 decks3 decks
66%synergy
Treasonous Ogre
67%inclusion2 decks3 decks
64%synergy
Pawn of Ulamog
67%inclusion2 decks3 decks
64%synergy
Warren Soultrader
67%inclusion2 decks3 decks
59%synergy
Mad Auntie
67%inclusion2 decks3 decks
65%synergy
Skirk Prospector
67%inclusion2 decks3 decks
62%synergy
Tomb Trawler
67%inclusion2 decks3 decks
66%synergy
Dauthi Voidwalker
67%inclusion2 decks3 decks
59%synergy
Hexing Squelcher
67%inclusion2 decks3 decks
53%synergy
Raphael, Tough Turtle
50%inclusion1 decks2 decks
49%synergy
Goblin Settler
33%inclusion1 decks3 decks
33%synergy
Aetherjacket
33%inclusion1 decks3 decks
33%synergy
Rapacious Dragon
33%inclusion1 decks3 decks
32%synergy
Gravecrawler
33%inclusion1 decks3 decks
32%synergy
Maralen of the Mornsong
33%inclusion1 decks3 decks
33%synergy
Magebane Lizard
33%inclusion1 decks3 decks
29%synergy
Grief
33%inclusion1 decks3 decks
32%synergy
Daretti, Rocketeer Engineer
33%inclusion1 decks3 decks
33%synergy
Murderous Rider
33%inclusion1 decks3 decks
32%synergy
Goblin Matron
33%inclusion1 decks3 decks
30%synergy
Young Necromancer
33%inclusion1 decks3 decks
33%synergy
Prowling Geistcatcher
33%inclusion1 decks3 decks
33%synergy
Basal Sliver
33%inclusion1 decks3 decks
33%synergy
Mahadi, Emporium Master
33%inclusion1 decks3 decks
20%synergy
Ardent Elementalist
33%inclusion1 decks3 decks
33%synergy
Emrakul's Hatcher
33%inclusion1 decks3 decks
33%synergy
Trazyn the Infinite
33%inclusion1 decks3 decks
33%synergy
Deathbringer Thoctar
33%inclusion1 decks3 decks
33%synergy
Instants
Dark Ritual
67%inclusion2 decks3 decks
25%synergy
Deflecting Swat
67%inclusion2 decks3 decks
46%synergy
Abrade
67%inclusion2 decks3 decks
45%synergy
Valakut Awakening
67%inclusion2 decks3 decks
59%synergy
Fell the Profane
33%inclusion1 decks3 decks
21%synergy
Volcanic Spite
33%inclusion1 decks3 decks
33%synergy
Untimely Malfunction
33%inclusion1 decks3 decks
15%synergy
Tibalt's Trickery
33%inclusion1 decks3 decks
20%synergy
Demonic Consultation
33%inclusion1 decks3 decks
33%synergy
Fire Prophecy
33%inclusion1 decks3 decks
33%synergy
Red Elemental Blast
33%inclusion1 decks3 decks
25%synergy
Pyroblast
33%inclusion1 decks3 decks
25%synergy
Withering Torment
33%inclusion1 decks3 decks
11%synergy
Sorceries
Praetor's Grasp
67%inclusion2 decks3 decks
64%synergy
Beseech the Mirror
67%inclusion2 decks3 decks
63%synergy
Diabolic Intent
33%inclusion1 decks3 decks
25%synergy
Torment of Hailfire
33%inclusion1 decks3 decks
27%synergy
Agadeem's Awakening
33%inclusion1 decks3 decks
30%synergy
Doomsday
33%inclusion1 decks3 decks
33%synergy
Rite of Flame
33%inclusion1 decks3 decks
28%synergy
Utility Artifacts
Ashnod's Altar
100%inclusion3 decks3 decks
89%synergy
Heartstone
100%inclusion3 decks3 decks
98%synergy
Tel-Jilad Stylus
67%inclusion2 decks3 decks
66%synergy
Wishclaw Talisman
67%inclusion2 decks3 decks
61%synergy
Phyrexian Altar
67%inclusion2 decks3 decks
61%synergy
Sensei's Divining Top
33%inclusion1 decks3 decks
27%synergy
Defense Grid
33%inclusion1 decks3 decks
31%synergy
The One Ring
33%inclusion1 decks3 decks
26%synergy
Vexing Bauble
33%inclusion1 decks3 decks
32%synergy
Scroll Rack
33%inclusion1 decks3 decks
32%synergy
Mirage Mirror
33%inclusion1 decks3 decks
33%synergy
Cloak and Dagger
33%inclusion1 decks3 decks
33%synergy
Lightning Greaves
33%inclusion1 decks3 decks
-2%synergy
Enchantments
Goblin Bombardment
33%inclusion1 decks3 decks
24%synergy
Utility Lands
Vault of Whispers
67%inclusion2 decks3 decks
60%synergy
Phyrexian Tower
67%inclusion2 decks3 decks
56%synergy
Urborg, Tomb of Yawgmoth
67%inclusion2 decks3 decks
48%synergy
Great Furnace
67%inclusion2 decks3 decks
60%synergy
Boseiju, Who Shelters All
33%inclusion1 decks3 decks
32%synergy
Geier Reach Sanitarium
33%inclusion1 decks3 decks
28%synergy
Mikokoro, Center of the Sea
33%inclusion1 decks3 decks
33%synergy
Sokenzan, Crucible of Defiance
33%inclusion1 decks3 decks
29%synergy
Homeward Path
33%inclusion1 decks3 decks
32%synergy
Mana Artifacts
Lotus Petal
100%inclusion3 decks3 decks
92%synergy
Sol Ring
100%inclusion3 decks3 decks
14%synergy
Mox Amber
100%inclusion3 decks3 decks
96%synergy
Mox Opal
100%inclusion3 decks3 decks
96%synergy
Arcane Signet
33%inclusion1 decks3 decks
-49%synergy
Rakdos Signet
33%inclusion1 decks3 decks
-25%synergy
Thran Turbine
33%inclusion1 decks3 decks
33%synergy
Fellwar Stone
33%inclusion1 decks3 decks
0%synergy
Springleaf Drum
33%inclusion1 decks3 decks
31%synergy
Lion's Eye Diamond
33%inclusion1 decks3 decks
31%synergy
Lands
Command Tower
100%inclusion3 decks3 decks
14%synergy
Badlands
100%inclusion3 decks3 decks
87%synergy
Blood Crypt
100%inclusion3 decks3 decks
54%synergy
Swamp
100%inclusion3 decks3 decks
2%synergy
Luxury Suite
100%inclusion3 decks3 decks
62%synergy
Gemstone Caverns
100%inclusion3 decks3 decks
95%synergy
Pinnacle Monk
100%inclusion3 decks3 decks
93%synergy
Sulfurous Springs
100%inclusion3 decks3 decks
53%synergy
Bloodstained Mire
100%inclusion3 decks3 decks
67%synergy
Graven Cairns
67%inclusion2 decks3 decks
36%synergy
Dragonskull Summit
67%inclusion2 decks3 decks
3%synergy
Cavern of Souls
67%inclusion2 decks3 decks
62%synergy
Mountain
67%inclusion2 decks3 decks
-31%synergy
Blightstep Pathway
67%inclusion2 decks3 decks
44%synergy
City of Brass
67%inclusion2 decks3 decks
60%synergy
Valakut Awakening
67%inclusion2 decks3 decks
59%synergy
Raucous Theater
33%inclusion1 decks3 decks
12%synergy
Fell the Profane
33%inclusion1 decks3 decks
21%synergy
Auntie's Hovel
33%inclusion1 decks3 decks
32%synergy
Exotic Orchard
33%inclusion1 decks3 decks
2%synergy
Agadeem's Awakening
33%inclusion1 decks3 decks
30%synergy
Blackcleave Cliffs
33%inclusion1 decks3 decks
13%synergy
Wooded Foothills
33%inclusion1 decks3 decks
26%synergy
Verdant Catacombs
33%inclusion1 decks3 decks
26%synergy
Boggart Trawler
33%inclusion1 decks3 decks
26%synergy
Temple of Malice
33%inclusion1 decks3 decks
0%synergy
Talon Gates of Madara
33%inclusion1 decks3 decks
32%synergy
Blazemire Verge
33%inclusion1 decks3 decks
3%synergy
Mount Doom
33%inclusion1 decks3 decks
17%synergy
Tainted Peak
33%inclusion1 decks3 decks
-10%synergy
Arid Mesa
33%inclusion1 decks3 decks
25%synergy
Snow-Covered Mountain
33%inclusion1 decks3 decks
30%synergy
Mana Confluence
33%inclusion1 decks3 decks
28%synergy
Snow-Covered Swamp
33%inclusion1 decks3 decks
30%synergy
Marsh Flats
33%inclusion1 decks3 decks
25%synergy
Polluted Delta
33%inclusion1 decks3 decks
25%synergy
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