Tekuthal, Inquiry Dominus (Commander) - Optimized Extra Turns

Tekuthal, Inquiry Dominus
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Background image for How To Play Horrors Differently In Commander
Sikora
Oct 30, 2025
Sikora
How To Play Horrors Differently In Commander
It's the spookiest time of the year... are you thinking of brewing a deck full of Horrors? We've got some ideas for how to keep it unique!
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Wan Shi Tong, Librarian
50%inclusion1 decks2 decks
43%synergy
High Synergy Cards
Nesting Grounds
100%inclusion6 decks6 decks
98%synergy
Steady Progress
100%inclusion6 decks6 decks
97%synergy
Inexorable Tide
100%inclusion6 decks6 decks
96%synergy
Dreamtide Whale
100%inclusion6 decks6 decks
96%synergy
Experimental Augury
100%inclusion6 decks6 decks
95%synergy
Tezzeret's Gambit
100%inclusion6 decks6 decks
95%synergy
Flux Channeler
100%inclusion6 decks6 decks
94%synergy
Magistrate's Scepter
83%inclusion5 decks6 decks
82%synergy
Ichormoon Gauntlet
83%inclusion5 decks6 decks
81%synergy
Ripples of Potential
83%inclusion5 decks6 decks
81%synergy
Top Cards
Contentious Plan
83%inclusion5 decks6 decks
79%synergy
Prologue to Phyresis
83%inclusion5 decks6 decks
80%synergy
Fabricate
83%inclusion5 decks6 decks
62%synergy
Sapphire Medallion
83%inclusion5 decks6 decks
26%synergy
Reject Imperfection
67%inclusion4 decks6 decks
64%synergy
Counterspell
67%inclusion4 decks6 decks
0%synergy
Deepglow Skate
67%inclusion4 decks6 decks
65%synergy
Tezzeret, Artifice Master
67%inclusion4 decks6 decks
63%synergy
Teferi, Master of Time
67%inclusion4 decks6 decks
61%synergy
Tamiyo, the Moon Sage
67%inclusion4 decks6 decks
65%synergy
Game Changers
Narset, Parter of Veils
83%inclusion5 decks6 decks
72%synergy
Mystical Tutor
83%inclusion5 decks6 decks
59%synergy
Rhystic Study
67%inclusion4 decks6 decks
33%synergy
Cyclonic Rift
67%inclusion4 decks6 decks
32%synergy
Ancient Tomb
50%inclusion3 decks6 decks
38%synergy
The One Ring
50%inclusion3 decks6 decks
37%synergy
Force of Will
50%inclusion3 decks6 decks
32%synergy
Fierce Guardianship
33%inclusion2 decks6 decks
10%synergy
Chrome Mox
17%inclusion1 decks6 decks
7%synergy
Mox Diamond
17%inclusion1 decks6 decks
11%synergy
Creatures
Hydroelectric Specimen
50%inclusion3 decks6 decks
37%synergy
Ingenious Prodigy
50%inclusion3 decks6 decks
49%synergy
Pollywog Prodigy
50%inclusion3 decks6 decks
46%synergy
Thrummingbird
50%inclusion3 decks6 decks
45%synergy
Displacer Kitten
33%inclusion2 decks6 decks
24%synergy
Silent Arbiter
33%inclusion2 decks6 decks
30%synergy
Snapcaster Mage
33%inclusion2 decks6 decks
27%synergy
Guildpact Informant
33%inclusion2 decks6 decks
31%synergy
Myojin of Cryptic Dreams
33%inclusion2 decks6 decks
32%synergy
Viral Drake
33%inclusion2 decks6 decks
32%synergy
Malcolm, Alluring Scoundrel
33%inclusion2 decks6 decks
29%synergy
Fatespinner
33%inclusion2 decks6 decks
32%synergy
Chasm Skulker
33%inclusion2 decks6 decks
21%synergy
Harbinger of the Seas
33%inclusion2 decks6 decks
24%synergy
Spark Double
33%inclusion2 decks6 decks
20%synergy
Archaeomancer
33%inclusion2 decks6 decks
18%synergy
Faerie Mastermind
33%inclusion2 decks6 decks
19%synergy
Lighthouse Chronologist
33%inclusion2 decks6 decks
32%synergy
Monstrosity of the Lake
33%inclusion2 decks6 decks
32%synergy
Blighted Agent
33%inclusion2 decks6 decks
31%synergy
Thing in the Ice
33%inclusion2 decks6 decks
32%synergy
Lulu, Stern Guardian
20%inclusion1 decks5 decks
18%synergy
Eluge, the Shoreless Sea
17%inclusion1 decks6 decks
8%synergy
Core Prowler
17%inclusion1 decks6 decks
16%synergy
Stormtide Leviathan
17%inclusion1 decks6 decks
10%synergy
Flesh Duplicate
17%inclusion1 decks6 decks
15%synergy
Plague Myr
17%inclusion1 decks6 decks
15%synergy
Dune Mover
17%inclusion1 decks6 decks
16%synergy
Jace, Vryn's Prodigy
17%inclusion1 decks6 decks
15%synergy
Shackle Slinger
17%inclusion1 decks6 decks
16%synergy
Nadir Kraken
17%inclusion1 decks6 decks
11%synergy
Coretapper
17%inclusion1 decks6 decks
16%synergy
The Flood of Mars
17%inclusion1 decks6 decks
14%synergy
Myr Convert
17%inclusion1 decks6 decks
15%synergy
Renegade Silent
17%inclusion1 decks6 decks
16%synergy
Ichorclaw Myr
17%inclusion1 decks6 decks
16%synergy
Danny Pink
17%inclusion1 decks6 decks
16%synergy
Unctus's Retrofitter
17%inclusion1 decks6 decks
16%synergy
Ferropede
17%inclusion1 decks6 decks
16%synergy
The Watcher in the Water
17%inclusion1 decks6 decks
15%synergy
Benthic Biomancer
17%inclusion1 decks6 decks
16%synergy
Twenty-Toed Toad
17%inclusion1 decks6 decks
11%synergy
Filigree Sages
17%inclusion1 decks6 decks
16%synergy
Necropede
17%inclusion1 decks6 decks
16%synergy
Mindless Automaton
17%inclusion1 decks6 decks
16%synergy
Chisei, Heart of Oceans
17%inclusion1 decks6 decks
17%synergy
Goldberry, River-Daughter
17%inclusion1 decks6 decks
16%synergy
Trinket Mage
17%inclusion1 decks6 decks
7%synergy
Instants
Sink into Stupor
67%inclusion4 decks6 decks
45%synergy
Serum Snare
67%inclusion4 decks6 decks
63%synergy
Pongify
50%inclusion3 decks6 decks
10%synergy
Rapid Hybridization
50%inclusion3 decks6 decks
16%synergy
Whir of Invention
50%inclusion3 decks6 decks
37%synergy
Fuel for the Cause
50%inclusion3 decks6 decks
48%synergy
Mana Drain
50%inclusion3 decks6 decks
23%synergy
Radstorm
50%inclusion3 decks6 decks
48%synergy
An Offer You Can't Refuse
33%inclusion2 decks6 decks
-3%synergy
Negate
33%inclusion2 decks6 decks
-5%synergy
Blue Sun's Zenith
33%inclusion2 decks6 decks
22%synergy
Aetherize
33%inclusion2 decks6 decks
5%synergy
Resculpt
33%inclusion2 decks6 decks
14%synergy
Tale's End
33%inclusion2 decks6 decks
30%synergy
Engulf the Shore
33%inclusion2 decks6 decks
25%synergy
Cryptic Command
33%inclusion2 decks6 decks
22%synergy
Arcane Denial
33%inclusion2 decks6 decks
-3%synergy
Force of Negation
33%inclusion2 decks6 decks
18%synergy
Misdirection
33%inclusion2 decks6 decks
28%synergy
Muddle the Mixture
17%inclusion1 decks6 decks
1%synergy
Three Steps Ahead
17%inclusion1 decks6 decks
7%synergy
Flare of Denial
17%inclusion1 decks6 decks
10%synergy
Strix Serenade
17%inclusion1 decks6 decks
7%synergy
Corrupted Resolve
17%inclusion1 decks6 decks
16%synergy
Swan Song
17%inclusion1 decks6 decks
-9%synergy
Wash Away
17%inclusion1 decks6 decks
12%synergy
Silundi Vision
17%inclusion1 decks6 decks
11%synergy
High Tide
17%inclusion1 decks6 decks
-28%synergy
Aspirant's Ascent
17%inclusion1 decks6 decks
16%synergy
Long River's Pull
17%inclusion1 decks6 decks
12%synergy
Sorceries
Vivisurgeon's Insight
50%inclusion3 decks6 decks
48%synergy
Ponder
33%inclusion2 decks6 decks
4%synergy
Stock Up
17%inclusion1 decks6 decks
14%synergy
Reshape
17%inclusion1 decks6 decks
9%synergy
Finale of Revelation
17%inclusion1 decks6 decks
10%synergy
Freeze in Place
17%inclusion1 decks6 decks
16%synergy
Solve the Equation
17%inclusion1 decks6 decks
4%synergy
Utility Artifacts
Throne of Geth
50%inclusion3 decks6 decks
49%synergy
Transmogrifying Wand
33%inclusion2 decks6 decks
33%synergy
Rings of Brighthearth
33%inclusion2 decks6 decks
26%synergy
Lightning Greaves
33%inclusion2 decks6 decks
7%synergy
The Chain Veil
33%inclusion2 decks6 decks
32%synergy
Insight Engine
25%inclusion1 decks4 decks
20%synergy
Voltaic Key
17%inclusion1 decks6 decks
11%synergy
Quicksilver Fountain
17%inclusion1 decks6 decks
15%synergy
Soul-Guide Lantern
17%inclusion1 decks6 decks
12%synergy
The Millennium Calendar
17%inclusion1 decks6 decks
14%synergy
Crawlspace
17%inclusion1 decks6 decks
14%synergy
Power Conduit
17%inclusion1 decks6 decks
16%synergy
Manifold Key
17%inclusion1 decks6 decks
10%synergy
Moonsilver Key
17%inclusion1 decks6 decks
14%synergy
Surge Node
17%inclusion1 decks6 decks
16%synergy
Contagion Clasp
17%inclusion1 decks6 decks
15%synergy
Contagion Engine
17%inclusion1 decks6 decks
15%synergy
Mindsplice Apparatus
17%inclusion1 decks6 decks
12%synergy
Hall of Triumph
17%inclusion1 decks6 decks
16%synergy
Sword of Truth and Justice
17%inclusion1 decks6 decks
16%synergy
Shadowspear
17%inclusion1 decks6 decks
15%synergy
Adaptive Training Post
17%inclusion1 decks6 decks
16%synergy
Kefnet's Monument
17%inclusion1 decks6 decks
10%synergy
Darksteel Reactor
17%inclusion1 decks6 decks
16%synergy
Swiftfoot Boots
17%inclusion1 decks6 decks
-11%synergy
Endless Atlas
17%inclusion1 decks6 decks
16%synergy
Isochron Scepter
17%inclusion1 decks6 decks
-1%synergy
Lux Cannon
17%inclusion1 decks6 decks
16%synergy
Enchantments
Propaganda
50%inclusion3 decks6 decks
20%synergy
Mesmerizing Dose
33%inclusion2 decks6 decks
32%synergy
The Phasing of Zhalfir
33%inclusion2 decks6 decks
32%synergy
Mystic Remora
33%inclusion2 decks6 decks
6%synergy
Dress Down
33%inclusion2 decks6 decks
31%synergy
As Foretold
33%inclusion2 decks6 decks
29%synergy
Back to Basics
17%inclusion1 decks6 decks
9%synergy
Teferi's Ageless Insight
17%inclusion1 decks6 decks
0%synergy
Wizard Class
17%inclusion1 decks6 decks
0%synergy
Lost in the Maze
17%inclusion1 decks6 decks
15%synergy
Ominous Seas
17%inclusion1 decks6 decks
6%synergy
Archmage Ascension
17%inclusion1 decks6 decks
15%synergy
Corrupted Conscience
17%inclusion1 decks6 decks
15%synergy
Inventive Iteration
17%inclusion1 decks6 decks
16%synergy
Teferi's Talent
17%inclusion1 decks6 decks
16%synergy
Planeswalkers
Teferi, Temporal Archmage
50%inclusion3 decks6 decks
49%synergy
Tezzeret the Seeker
50%inclusion3 decks6 decks
41%synergy
Will Kenrith
33%inclusion2 decks6 decks
33%synergy
Teferi, Temporal Pilgrim
33%inclusion2 decks6 decks
28%synergy
Jace, the Mind Sculptor
33%inclusion2 decks6 decks
30%synergy
Jace, Unraveler of Secrets
33%inclusion2 decks6 decks
32%synergy
Jace, Architect of Thought
17%inclusion1 decks6 decks
16%synergy
Tezzeret, Betrayer of Flesh
17%inclusion1 decks6 decks
14%synergy
Vronos, Masked Inquisitor
17%inclusion1 decks6 decks
16%synergy
Kasmina, Enigmatic Mentor
17%inclusion1 decks6 decks
15%synergy
Kaito, Cunning Infiltrator
17%inclusion1 decks6 decks
15%synergy
Utility Lands
Mystic Sanctuary
83%inclusion5 decks6 decks
33%synergy
Karn's Bastion
83%inclusion5 decks6 decks
78%synergy
Reliquary Tower
83%inclusion5 decks6 decks
27%synergy
Mage-Ring Network
67%inclusion4 decks6 decks
66%synergy
Nykthos, Shrine to Nyx
67%inclusion4 decks6 decks
51%synergy
Inventors' Fair
50%inclusion3 decks6 decks
37%synergy
Academy Ruins
50%inclusion3 decks6 decks
32%synergy
Mistrise Village
33%inclusion2 decks6 decks
24%synergy
Buried Ruin
33%inclusion2 decks6 decks
21%synergy
Maze of Ith
33%inclusion2 decks6 decks
28%synergy
Blast Zone
33%inclusion2 decks6 decks
31%synergy
Urza's Saga
33%inclusion2 decks6 decks
17%synergy
War Room
33%inclusion2 decks6 decks
17%synergy
Command Beacon
33%inclusion2 decks6 decks
29%synergy
Saprazzan Skerry
33%inclusion2 decks6 decks
30%synergy
Otawara, Soaring City
33%inclusion2 decks6 decks
8%synergy
Wasteland
17%inclusion1 decks6 decks
15%synergy
Tolaria West
17%inclusion1 decks6 decks
11%synergy
Inkmoth Nexus
17%inclusion1 decks6 decks
15%synergy
Thespian's Stage
17%inclusion1 decks6 decks
14%synergy
Archway of Innovation
17%inclusion1 decks6 decks
6%synergy
Dark Depths
17%inclusion1 decks6 decks
16%synergy
Strip Mine
17%inclusion1 decks6 decks
14%synergy
Mana Artifacts
Sol Ring
100%inclusion6 decks6 decks
15%synergy
Everflowing Chalice
83%inclusion5 decks6 decks
67%synergy
Glistening Sphere
83%inclusion5 decks6 decks
82%synergy
Astral Cornucopia
83%inclusion5 decks6 decks
80%synergy
Empowered Autogenerator
83%inclusion5 decks6 decks
82%synergy
Staff of Compleation
67%inclusion4 decks6 decks
65%synergy
Replicating Ring
50%inclusion3 decks6 decks
48%synergy
Arcane Signet
33%inclusion2 decks6 decks
-32%synergy
Thought Vessel
33%inclusion2 decks6 decks
-18%synergy
Midnight Clock
33%inclusion2 decks6 decks
13%synergy
The Eternity Elevator
25%inclusion1 decks4 decks
23%synergy
Strixhaven Stadium
17%inclusion1 decks6 decks
16%synergy
Lotus Petal
17%inclusion1 decks6 decks
4%synergy
Mox Amber
17%inclusion1 decks6 decks
9%synergy
Crystal Skull, Isu Spyglass
17%inclusion1 decks6 decks
12%synergy
Extraplanar Lens
17%inclusion1 decks6 decks
9%synergy
Pyramid of the Pantheon
17%inclusion1 decks6 decks
16%synergy
Lands
Island
100%inclusion6 decks6 decks
7%synergy
Sink into Stupor
67%inclusion4 decks6 decks
45%synergy
Hydroelectric Specimen
50%inclusion3 decks6 decks
37%synergy
Gemstone Caverns
33%inclusion2 decks6 decks
27%synergy
The Mycosynth Gardens
17%inclusion1 decks6 decks
11%synergy
Myriad Landscape
17%inclusion1 decks6 decks
-10%synergy
Urza's Cave
17%inclusion1 decks6 decks
13%synergy
Tendo Ice Bridge
17%inclusion1 decks6 decks
17%synergy
Silundi Vision
17%inclusion1 decks6 decks
11%synergy
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