Kelsien, the Plague (Commander) - Midrange

Alternate Names:

Altaïr, Brotherhood MentorAltaïr, Brotherhood Mentor

Ezra Sassaman
Nov 20, 2025
Rebuilding Kelsien, the Plague with Avatar: The Last Airbender Eternal
Avatar: The Last Airbender is bringing back experience counters, and that means that we can revamp Kelsien, the Plague.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Restoration Seminar
25%inclusion1 decks4 decks
24%synergy
Decorum Dissertation
25%inclusion1 decks4 decks
23%synergy
Harsh Annotation
25%inclusion1 decks4 decks
25%synergy
Moseo, Vein's New Dean
25%inclusion1 decks4 decks
24%synergy
High Synergy Cards
Basilisk Collar
78%inclusion18 decks23 decks
74%synergy
Otharri, Suns' Glory
74%inclusion17 decks23 decks
68%synergy
Minthara, Merciless Soul
70%inclusion16 decks23 decks
68%synergy
Sting, the Glinting Dagger
70%inclusion16 decks23 decks
68%synergy
Rune of Mortality
65%inclusion15 decks23 decks
64%synergy
Drumbellower
57%inclusion13 decks23 decks
55%synergy
Mari, the Killing Quill
61%inclusion14 decks23 decks
54%synergy
Arcane Lighthouse
52%inclusion12 decks23 decks
51%synergy
Thornbite Staff
52%inclusion12 decks23 decks
51%synergy
Dazzling Theater // Prop Room
53%inclusion10 decks19 decks
51%synergy
Top Cards
Morbid Opportunist
61%inclusion14 decks23 decks
43%synergy
Magda, the Hoardmaster
52%inclusion12 decks23 decks
50%synergy
Shadowspear
52%inclusion12 decks23 decks
48%synergy
Ruinous Ultimatum
52%inclusion12 decks23 decks
13%synergy
Gorgon's Head
48%inclusion11 decks23 decks
47%synergy
Boros Charm
48%inclusion11 decks23 decks
19%synergy
White Plume Adventurer
48%inclusion11 decks23 decks
47%synergy
General's Enforcer
48%inclusion11 decks23 decks
40%synergy
All-Out Assault
44%inclusion7 decks16 decks
32%synergy
Vorpal Sword
43%inclusion10 decks23 decks
41%synergy
Game Changers
Enlightened Tutor
35%inclusion8 decks23 decks
23%synergy
Teferi's Protection
26%inclusion6 decks23 decks
7%synergy
Jeska's Will
22%inclusion5 decks23 decks
12%synergy
The One Ring
22%inclusion5 decks23 decks
14%synergy
Demonic Tutor
22%inclusion5 decks23 decks
3%synergy
Orcish Bowmasters
22%inclusion5 decks23 decks
16%synergy
Smothering Tithe
17%inclusion4 decks23 decks
-7%synergy
Farewell
13%inclusion3 decks23 decks
3%synergy
Vampiric Tutor
13%inclusion3 decks23 decks
-1%synergy
Ancient Tomb
8.7%inclusion2 decks23 decks
1%synergy
Creatures
Daxos the Returned
43%inclusion10 decks23 decks
43%synergy
Shay Cormac
41%inclusion9 decks22 decks
38%synergy
Taii Wakeen, Perfect Shot
39%inclusion9 decks23 decks
38%synergy
Falthis, Shadowcat Familiar
39%inclusion9 decks23 decks
38%synergy
Kalemne, Disciple of Iroas
39%inclusion9 decks23 decks
38%synergy
Maha, Its Feathers Night
36%inclusion8 decks22 decks
35%synergy
Humble Defector
35%inclusion8 decks23 decks
32%synergy
Termination Facilitator
35%inclusion8 decks23 decks
33%synergy
Slaughter Specialist
35%inclusion8 decks23 decks
34%synergy
Stoneforge Mystic
30%inclusion7 decks23 decks
28%synergy
Esper Sentinel
30%inclusion7 decks23 decks
12%synergy
Lae'zel, Vlaakith's Champion
30%inclusion7 decks23 decks
29%synergy
Patrolling Peacemaker
27%inclusion4 decks15 decks
26%synergy
Ertha Jo, Frontier Mentor
26%inclusion6 decks23 decks
25%synergy
Mathas, Fiend Seeker
26%inclusion6 decks23 decks
24%synergy
Void Beckoner
26%inclusion6 decks23 decks
25%synergy
Goblin Sharpshooter
26%inclusion6 decks23 decks
25%synergy
Harvester of Souls
22%inclusion5 decks23 decks
19%synergy
Athreos, Shroud-Veiled
22%inclusion5 decks23 decks
20%synergy
Karlach, Fury of Avernus
17%inclusion4 decks23 decks
13%synergy
Weathered Wayfarer
17%inclusion4 decks23 decks
16%synergy
Lotho, Corrupt Shirriff
17%inclusion4 decks23 decks
4%synergy
Varchild, Betrayer of Kjeldor
17%inclusion4 decks23 decks
17%synergy
Ragavan, Nimble Pilferer
17%inclusion4 decks23 decks
10%synergy
Giver of Runes
17%inclusion4 decks23 decks
15%synergy
Mother of Runes
17%inclusion4 decks23 decks
10%synergy
Massacre Girl, Known Killer
17%inclusion4 decks23 decks
15%synergy
Queen Marchesa
17%inclusion4 decks23 decks
11%synergy
Grateful Apparition
17%inclusion4 decks23 decks
17%synergy
Dauthi Voidwalker
17%inclusion4 decks23 decks
14%synergy
Professional Face-Breaker
13%inclusion3 decks23 decks
-2%synergy
Ankle Shanker
13%inclusion3 decks23 decks
10%synergy
Puresteel Paladin
13%inclusion3 decks23 decks
9%synergy
Generous Plunderer
13%inclusion3 decks23 decks
10%synergy
Loran of the Third Path
13%inclusion3 decks23 decks
6%synergy
Akiri, Fearless Voyager
13%inclusion3 decks23 decks
11%synergy
Hunted Bonebrute
13%inclusion3 decks23 decks
13%synergy
Guul Draz Assassin
13%inclusion3 decks23 decks
12%synergy
Goblin Spymaster
13%inclusion3 decks23 decks
12%synergy
Gisa, Glorious Resurrector
13%inclusion3 decks23 decks
12%synergy
Qarsi Revenant
13%inclusion2 decks16 decks
10%synergy
Cloud, Midgar Mercenary
13%inclusion2 decks16 decks
11%synergy
Witch Enchanter
9.1%inclusion2 decks22 decks
2%synergy
Metastatic Evangel
9.1%inclusion2 decks22 decks
9%synergy
Bureau Headmaster
9.1%inclusion2 decks22 decks
8%synergy
Pinnacle Monk
9.1%inclusion2 decks22 decks
6%synergy
Azula, Ruthless Firebender
9.1%inclusion1 decks11 decks
9%synergy
Jet, Freedom Fighter
9.1%inclusion1 decks11 decks
9%synergy
Student of Warfare
8.7%inclusion2 decks23 decks
9%synergy
Aurelia, the Warleader
8.7%inclusion2 decks23 decks
-9%synergy
Instants
Stroke of Midnight
43%inclusion10 decks23 decks
32%synergy
Anguished Unmaking
43%inclusion10 decks23 decks
10%synergy
Deflecting Swat
35%inclusion8 decks23 decks
19%synergy
Swords to Plowshares
35%inclusion8 decks23 decks
-27%synergy
Generous Gift
35%inclusion8 decks23 decks
17%synergy
You Are Already Dead
30%inclusion7 decks23 decks
29%synergy
Malakir Rebirth
26%inclusion6 decks23 decks
21%synergy
Chaos Warp
22%inclusion5 decks23 decks
6%synergy
Mirrodin Avenged
22%inclusion5 decks23 decks
21%synergy
Crackling Doom
22%inclusion5 decks23 decks
5%synergy
Fracture
22%inclusion5 decks23 decks
16%synergy
Inevitable Defeat
18%inclusion3 decks17 decks
12%synergy
Deadly Rollick
17%inclusion4 decks23 decks
6%synergy
Final Showdown
17%inclusion4 decks23 decks
15%synergy
Wear // Tear
17%inclusion4 decks23 decks
6%synergy
Continue?
17%inclusion1 decks6 decks
16%synergy
Untimely Malfunction
15%inclusion3 decks20 decks
10%synergy
Legion Leadership
14%inclusion3 decks22 decks
9%synergy
Everybody Lives!
13%inclusion3 decks23 decks
12%synergy
Big Score
13%inclusion3 decks23 decks
3%synergy
Despark
13%inclusion3 decks23 decks
-1%synergy
Offer Immortality
13%inclusion3 decks23 decks
12%synergy
Galadriel's Dismissal
13%inclusion3 decks23 decks
11%synergy
Restoration Magic
13%inclusion2 decks16 decks
10%synergy
Flare of Fortitude
9.1%inclusion2 decks22 decks
6%synergy
Loran's Escape
8.7%inclusion2 decks23 decks
7%synergy
Whisper of the Dross
8.7%inclusion2 decks23 decks
9%synergy
Return the Favor
8.7%inclusion2 decks23 decks
7%synergy
Deadly Dispute
8.7%inclusion2 decks23 decks
-14%synergy
Flawless Maneuver
8.7%inclusion2 decks23 decks
-6%synergy
Dark Ritual
8.7%inclusion2 decks23 decks
-8%synergy
Rakdos Charm
8.7%inclusion2 decks23 decks
0%synergy
Soul Shatter
8.7%inclusion2 decks23 decks
7%synergy
Tibalt's Trickery
8.7%inclusion2 decks23 decks
5%synergy
Demand Answers
8.7%inclusion2 decks23 decks
4%synergy
Touch of Moonglove
8.7%inclusion2 decks23 decks
9%synergy
Sejiri Shelter
8.7%inclusion2 decks23 decks
6%synergy
Reprieve
8.7%inclusion2 decks23 decks
6%synergy
Valakut Awakening
8.7%inclusion2 decks23 decks
6%synergy
Protection Magic
6.3%inclusion1 decks16 decks
6%synergy
Sorceries
Open the Armory
35%inclusion8 decks23 decks
31%synergy
Mythos of Snapdax
35%inclusion8 decks23 decks
29%synergy
Steelshaper's Gift
35%inclusion8 decks23 decks
32%synergy
Painful Truths
30%inclusion7 decks23 decks
22%synergy
Night's Whisper
30%inclusion7 decks23 decks
17%synergy
Vandalblast
26%inclusion6 decks23 decks
16%synergy
Call of the Death-Dweller
26%inclusion6 decks23 decks
26%synergy
Read the Bones
22%inclusion5 decks23 decks
13%synergy
Drown in Ichor
22%inclusion5 decks23 decks
21%synergy
Blasphemous Act
17%inclusion4 decks23 decks
-5%synergy
Damn
17%inclusion4 decks23 decks
0%synergy
Sevinne's Reclamation
13%inclusion3 decks23 decks
5%synergy
Secret Rendezvous
13%inclusion3 decks23 decks
11%synergy
Faithless Looting
13%inclusion3 decks23 decks
-2%synergy
Single Combat
13%inclusion3 decks23 decks
12%synergy
Wheel of Fortune
13%inclusion3 decks23 decks
9%synergy
Toxic Deluge
13%inclusion3 decks23 decks
5%synergy
Sign in Blood
13%inclusion3 decks23 decks
5%synergy
Chandra's Ignition
13%inclusion3 decks23 decks
11%synergy
Bloodsoaked Insight
9.1%inclusion2 decks22 decks
7%synergy
Sundering Eruption
9.1%inclusion2 decks22 decks
6%synergy
Wheel of Misfortune
8.7%inclusion2 decks23 decks
7%synergy
Mandate of Abaddon
8.7%inclusion2 decks23 decks
9%synergy
Damning Verdict
8.7%inclusion2 decks23 decks
8%synergy
Unearth
8.7%inclusion2 decks23 decks
6%synergy
Agadeem's Awakening
8.7%inclusion2 decks23 decks
6%synergy
Make an Example
8.7%inclusion2 decks23 decks
8%synergy
Gamble
8.7%inclusion2 decks23 decks
2%synergy
Alliance of Arms
8.7%inclusion2 decks23 decks
9%synergy
Wanderer's Strike
8.7%inclusion2 decks23 decks
9%synergy
Scout for Survivors
6.7%inclusion1 decks15 decks
7%synergy
Nibelheim Aflame
6.3%inclusion1 decks16 decks
6%synergy
Blasphemous Edict
5.3%inclusion1 decks19 decks
1%synergy
Utility Artifacts
Gorgon Flail
39%inclusion9 decks23 decks
38%synergy
Illusionist's Bracers
35%inclusion8 decks23 decks
33%synergy
Magewright's Stone
30%inclusion7 decks23 decks
29%synergy
Swiftfoot Boots
30%inclusion7 decks23 decks
-1%synergy
Quietus Spike
26%inclusion6 decks23 decks
25%synergy
The Fire Nation Drill
18%inclusion2 decks11 decks
18%synergy
Glaring Spotlight
17%inclusion4 decks23 decks
17%synergy
Halo Fountain
17%inclusion4 decks23 decks
17%synergy
Mithril Coat
17%inclusion4 decks23 decks
12%synergy
Hunter's Blowgun
17%inclusion4 decks23 decks
17%synergy
Genesis Chamber
13%inclusion3 decks23 decks
13%synergy
Thousand-Year Elixir
13%inclusion3 decks23 decks
12%synergy
Lightning Greaves
13%inclusion3 decks23 decks
-21%synergy
Dowsing Dagger
13%inclusion3 decks23 decks
12%synergy
Hammer of Nazahn
13%inclusion3 decks23 decks
11%synergy
Dissection Tools
11%inclusion2 decks19 decks
10%synergy
Brotherhood Regalia
9.1%inclusion2 decks22 decks
6%synergy
Robe of Stars
8.7%inclusion2 decks23 decks
8%synergy
Contagion Clasp
8.7%inclusion2 decks23 decks
9%synergy
Embercleave
8.7%inclusion2 decks23 decks
6%synergy
Skullclamp
8.7%inclusion2 decks23 decks
-20%synergy
Whispersilk Cloak
8.7%inclusion2 decks23 decks
3%synergy
Battlemage's Bracers
8.7%inclusion2 decks23 decks
8%synergy
Tome of Legends
8.7%inclusion2 decks23 decks
8%synergy
Sunforger
8.7%inclusion2 decks23 decks
6%synergy
Peter Parker's Camera
8.3%inclusion1 decks12 decks
8%synergy
Requiem Monolith
7.1%inclusion1 decks14 decks
7%synergy
The Seriema
6.7%inclusion1 decks15 decks
6%synergy
Long-Range Sensor
6.7%inclusion1 decks15 decks
6%synergy
Dragonfire Blade
6.3%inclusion1 decks16 decks
5%synergy
Buster Sword
6.3%inclusion1 decks16 decks
5%synergy
The Fire Crystal
6.3%inclusion1 decks16 decks
3%synergy
Pumpkin Bombs
5.9%inclusion1 decks17 decks
6%synergy
Enchantments
Gift of Doom
30%inclusion7 decks23 decks
30%synergy
Fighter Class
30%inclusion7 decks23 decks
28%synergy
Black Market Connections
30%inclusion7 decks23 decks
15%synergy
Reconnaissance
26%inclusion6 decks23 decks
14%synergy
Agent of the Shadow Thieves
22%inclusion5 decks23 decks
21%synergy
At Knifepoint
22%inclusion5 decks23 decks
20%synergy
Revel in Riches
22%inclusion5 decks23 decks
15%synergy
Trouble in Pairs
22%inclusion5 decks23 decks
17%synergy
Eye of Nidhogg
19%inclusion3 decks16 decks
18%synergy
Aspect of Gorgon
17%inclusion4 decks23 decks
17%synergy
Kaya's Ghostform
17%inclusion4 decks23 decks
15%synergy
Search for Dagger
17%inclusion2 decks12 decks
16%synergy
Sigarda's Aid
13%inclusion3 decks23 decks
10%synergy
Court of Ardenvale
13%inclusion3 decks23 decks
11%synergy
Land Tax
13%inclusion3 decks23 decks
7%synergy
Phyrexian Arena
13%inclusion3 decks23 decks
-6%synergy
Nowhere to Run
9.1%inclusion2 decks22 decks
9%synergy
Smuggler's Share
8.7%inclusion2 decks23 decks
6%synergy
Grasp of Fate
8.7%inclusion2 decks23 decks
8%synergy
Black Market
8.7%inclusion2 decks23 decks
3%synergy
Ghoulish Impetus
8.7%inclusion2 decks23 decks
8%synergy
Gift of Immortality
8.7%inclusion2 decks23 decks
8%synergy
Forge Anew
8.7%inclusion2 decks23 decks
6%synergy
Rakdos Joins Up
8.7%inclusion2 decks23 decks
7%synergy
Feast of the Victorious Dead
8.7%inclusion2 decks23 decks
8%synergy
Death Pits of Rath
8.7%inclusion2 decks23 decks
8%synergy
Curse of Opulence
8.7%inclusion2 decks23 decks
3%synergy
Ghostly Prison
8.7%inclusion2 decks23 decks
1%synergy
Sticky Fingers
8.7%inclusion2 decks23 decks
8%synergy
Spiteful Banditry
8.7%inclusion2 decks23 decks
7%synergy
Brilliant Wings
8.3%inclusion1 decks12 decks
8%synergy
Smile at Death
5.9%inclusion1 decks17 decks
4%synergy
Derelict Attic // Widow's Walk
5.3%inclusion1 decks19 decks
5%synergy
Sheltered by Ghosts
5.3%inclusion1 decks19 decks
5%synergy
Grievous Wound
5.0%inclusion1 decks20 decks
4%synergy
Planeswalkers
Vraska, Betrayal's Sting
8.7%inclusion2 decks23 decks
8%synergy
Utility Lands
Vault of the Archangel
35%inclusion8 decks23 decks
12%synergy
Bojuka Bog
30%inclusion7 decks23 decks
0%synergy
Detection Tower
26%inclusion6 decks23 decks
26%synergy
Karn's Bastion
22%inclusion5 decks23 decks
21%synergy
Urborg, Tomb of Yawgmoth
22%inclusion5 decks23 decks
9%synergy
Urza's Saga
17%inclusion4 decks23 decks
13%synergy
Rogue's Passage
17%inclusion4 decks23 decks
-6%synergy
Buried Ruin
13%inclusion3 decks23 decks
10%synergy
Scavenger Grounds
13%inclusion3 decks23 decks
12%synergy
Command Beacon
13%inclusion3 decks23 decks
8%synergy
Eiganjo, Seat of the Empire
13%inclusion3 decks23 decks
7%synergy
Takenuma, Abandoned Mire
13%inclusion3 decks23 decks
6%synergy
Axgard Armory
13%inclusion3 decks23 decks
11%synergy
Shizo, Death's Storehouse
8.7%inclusion2 decks23 decks
2%synergy
Maze of Ith
8.7%inclusion2 decks23 decks
5%synergy
Minas Tirith
8.7%inclusion2 decks23 decks
0%synergy
Field of the Dead
8.7%inclusion2 decks23 decks
8%synergy
Susur Secundi, Void Altar
6.7%inclusion1 decks15 decks
5%synergy
Mana Artifacts
Arcane Signet
83%inclusion19 decks23 decks
-3%synergy
Sol Ring
83%inclusion19 decks23 decks
-6%synergy
Patriar's Seal
48%inclusion11 decks23 decks
46%synergy
Talisman of Conviction
43%inclusion10 decks23 decks
2%synergy
Talisman of Hierarchy
43%inclusion10 decks23 decks
3%synergy
Talisman of Indulgence
26%inclusion6 decks23 decks
-11%synergy
Fellwar Stone
26%inclusion6 decks23 decks
-2%synergy
Commander's Sphere
17%inclusion4 decks23 decks
3%synergy
Boros Signet
17%inclusion4 decks23 decks
-10%synergy
Rakdos Signet
13%inclusion3 decks23 decks
-16%synergy
Chromatic Lantern
13%inclusion3 decks23 decks
2%synergy
Mind Stone
13%inclusion3 decks23 decks
4%synergy
Orzhov Signet
13%inclusion3 decks23 decks
-18%synergy
Aetheric Amplifier
12%inclusion2 decks17 decks
11%synergy
Hourglass of the Lost
9.1%inclusion2 decks22 decks
9%synergy
Cursed Mirror
8.7%inclusion2 decks23 decks
6%synergy
Bandit's Haul
8.7%inclusion2 decks23 decks
8%synergy
Bounty Board
8.7%inclusion2 decks23 decks
7%synergy
Chrome Mox
8.7%inclusion2 decks23 decks
4%synergy
The Soul Stone
7.1%inclusion1 decks14 decks
4%synergy
Lands
Plains
100%inclusion23 decks23 decks
5%synergy
Swamp
96%inclusion22 decks23 decks
0%synergy
Mountain
96%inclusion22 decks23 decks
2%synergy
Command Tower
91%inclusion21 decks23 decks
-1%synergy
Forbidden Orchard
74%inclusion17 decks23 decks
71%synergy
Sacred Foundry
61%inclusion14 decks23 decks
16%synergy
Godless Shrine
61%inclusion14 decks23 decks
13%synergy
Savai Triome
57%inclusion13 decks23 decks
19%synergy
Exotic Orchard
57%inclusion13 decks23 decks
4%synergy
Blood Crypt
57%inclusion13 decks23 decks
12%synergy
Arid Mesa
52%inclusion12 decks23 decks
21%synergy
Marsh Flats
52%inclusion12 decks23 decks
21%synergy
Nomad Outpost
48%inclusion11 decks23 decks
-10%synergy
Spectator Seating
48%inclusion11 decks23 decks
17%synergy
Vault of Champions
48%inclusion11 decks23 decks
15%synergy
Bloodstained Mire
48%inclusion11 decks23 decks
15%synergy
Dragonskull Summit
43%inclusion10 decks23 decks
-9%synergy
Caves of Koilos
39%inclusion9 decks23 decks
0%synergy
Sundown Pass
39%inclusion9 decks23 decks
18%synergy
Luxury Suite
39%inclusion9 decks23 decks
8%synergy
Shattered Landscape
36%inclusion8 decks22 decks
18%synergy
Fetid Heath
35%inclusion8 decks23 decks
14%synergy
Battlefield Forge
35%inclusion8 decks23 decks
-6%synergy
Isolated Chapel
35%inclusion8 decks23 decks
-18%synergy
Shattered Sanctum
35%inclusion8 decks23 decks
10%synergy
Clifftop Retreat
35%inclusion8 decks23 decks
-16%synergy
Haunted Ridge
35%inclusion8 decks23 decks
15%synergy
Sulfurous Springs
35%inclusion8 decks23 decks
7%synergy
Smoldering Marsh
30%inclusion7 decks23 decks
-6%synergy
Rugged Prairie
30%inclusion7 decks23 decks
13%synergy
Malakir Rebirth
26%inclusion6 decks23 decks
21%synergy
Orzhov Basilica
26%inclusion6 decks23 decks
12%synergy
Fabled Passage
22%inclusion5 decks23 decks
14%synergy
Badlands
22%inclusion5 decks23 decks
9%synergy
Plateau
22%inclusion5 decks23 decks
10%synergy
Scrubland
22%inclusion5 decks23 decks
10%synergy
Mana Confluence
22%inclusion5 decks23 decks
12%synergy
Prismatic Vista
17%inclusion4 decks23 decks
14%synergy
Rakdos Carnarium
17%inclusion4 decks23 decks
6%synergy
Graven Cairns
17%inclusion4 decks23 decks
6%synergy
Boros Garrison
17%inclusion4 decks23 decks
5%synergy
Plaza of Heroes
17%inclusion4 decks23 decks
13%synergy
Needleverge Pathway
17%inclusion4 decks23 decks
10%synergy
Path of Ancestry
17%inclusion4 decks23 decks
-21%synergy
City of Brass
17%inclusion4 decks23 decks
7%synergy
Silent Clearing
17%inclusion4 decks23 decks
14%synergy
Legion Leadership
14%inclusion3 decks22 decks
9%synergy
Glittering Massif
13%inclusion2 decks15 decks
12%synergy
Shadowblood Ridge
13%inclusion3 decks23 decks
-2%synergy
Terramorphic Expanse
13%inclusion3 decks23 decks
-6%synergy