Altaïr, Brotherhood Mentor (Commander) - Midrange

Original Name:

Kelsien, the PlagueKelsien, the Plague

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
77%inclusion17 decks22 decks
73%synergy
Otharri, Suns' Glory
73%inclusion16 decks22 decks
67%synergy
Minthara, Merciless Soul
68%inclusion15 decks22 decks
67%synergy
Sting, the Glinting Dagger
68%inclusion15 decks22 decks
66%synergy
Rune of Mortality
64%inclusion14 decks22 decks
62%synergy
Arcane Lighthouse
55%inclusion12 decks22 decks
53%synergy
Thornbite Staff
55%inclusion12 decks22 decks
53%synergy
Mari, the Killing Quill
59%inclusion13 decks22 decks
53%synergy
Drumbellower
55%inclusion12 decks22 decks
53%synergy
Dazzling Theater // Prop Room
53%inclusion10 decks19 decks
51%synergy
Top Cards
Morbid Opportunist
59%inclusion13 decks22 decks
41%synergy
Shadowspear
55%inclusion12 decks22 decks
50%synergy
Magda, the Hoardmaster
50%inclusion11 decks22 decks
48%synergy
Ruinous Ultimatum
50%inclusion11 decks22 decks
11%synergy
Gorgon's Head
45%inclusion10 decks22 decks
44%synergy
Boros Charm
45%inclusion10 decks22 decks
16%synergy
White Plume Adventurer
45%inclusion10 decks22 decks
44%synergy
Daxos the Returned
45%inclusion10 decks22 decks
45%synergy
General's Enforcer
45%inclusion10 decks22 decks
37%synergy
Stroke of Midnight
45%inclusion10 decks22 decks
34%synergy
Game Changers
Enlightened Tutor
36%inclusion8 decks22 decks
24%synergy
Teferi's Protection
27%inclusion6 decks22 decks
8%synergy
Jeska's Will
23%inclusion5 decks22 decks
13%synergy
The One Ring
23%inclusion5 decks22 decks
15%synergy
Demonic Tutor
23%inclusion5 decks22 decks
4%synergy
Orcish Bowmasters
23%inclusion5 decks22 decks
17%synergy
Smothering Tithe
18%inclusion4 decks22 decks
-7%synergy
Farewell
14%inclusion3 decks22 decks
3%synergy
Vampiric Tutor
14%inclusion3 decks22 decks
-1%synergy
Ancient Tomb
9.1%inclusion2 decks22 decks
1%synergy
Creatures
Taii Wakeen, Perfect Shot
41%inclusion9 decks22 decks
40%synergy
Shay Cormac
41%inclusion9 decks22 decks
38%synergy
Maha, Its Feathers Night
36%inclusion8 decks22 decks
35%synergy
Humble Defector
36%inclusion8 decks22 decks
34%synergy
Termination Facilitator
36%inclusion8 decks22 decks
35%synergy
Falthis, Shadowcat Familiar
36%inclusion8 decks22 decks
35%synergy
Slaughter Specialist
36%inclusion8 decks22 decks
35%synergy
Kalemne, Disciple of Iroas
36%inclusion8 decks22 decks
36%synergy
Stoneforge Mystic
32%inclusion7 decks22 decks
29%synergy
Esper Sentinel
32%inclusion7 decks22 decks
14%synergy
Lae'zel, Vlaakith's Champion
32%inclusion7 decks22 decks
30%synergy
Ertha Jo, Frontier Mentor
27%inclusion6 decks22 decks
27%synergy
Goblin Sharpshooter
27%inclusion6 decks22 decks
27%synergy
Patrolling Peacemaker
27%inclusion4 decks15 decks
26%synergy
Mathas, Fiend Seeker
23%inclusion5 decks22 decks
21%synergy
Void Beckoner
23%inclusion5 decks22 decks
22%synergy
Karlach, Fury of Avernus
18%inclusion4 decks22 decks
14%synergy
Weathered Wayfarer
18%inclusion4 decks22 decks
16%synergy
Lotho, Corrupt Shirriff
18%inclusion4 decks22 decks
5%synergy
Varchild, Betrayer of Kjeldor
18%inclusion4 decks22 decks
18%synergy
Ragavan, Nimble Pilferer
18%inclusion4 decks22 decks
10%synergy
Giver of Runes
18%inclusion4 decks22 decks
15%synergy
Harvester of Souls
18%inclusion4 decks22 decks
15%synergy
Mother of Runes
18%inclusion4 decks22 decks
11%synergy
Athreos, Shroud-Veiled
18%inclusion4 decks22 decks
17%synergy
Massacre Girl, Known Killer
18%inclusion4 decks22 decks
16%synergy
Queen Marchesa
18%inclusion4 decks22 decks
12%synergy
Grateful Apparition
18%inclusion4 decks22 decks
18%synergy
Dauthi Voidwalker
18%inclusion4 decks22 decks
15%synergy
Professional Face-Breaker
14%inclusion3 decks22 decks
-2%synergy
Ankle Shanker
14%inclusion3 decks22 decks
11%synergy
Puresteel Paladin
14%inclusion3 decks22 decks
10%synergy
Generous Plunderer
14%inclusion3 decks22 decks
10%synergy
Loran of the Third Path
14%inclusion3 decks22 decks
7%synergy
Akiri, Fearless Voyager
14%inclusion3 decks22 decks
11%synergy
Hunted Bonebrute
14%inclusion3 decks22 decks
14%synergy
Guul Draz Assassin
14%inclusion3 decks22 decks
13%synergy
Goblin Spymaster
14%inclusion3 decks22 decks
13%synergy
Gisa, Glorious Resurrector
14%inclusion3 decks22 decks
13%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
Student of Warfare
9.1%inclusion2 decks22 decks
9%synergy
Aurelia, the Warleader
9.1%inclusion2 decks22 decks
-9%synergy
Kellan, the Fae-Blooded
9.1%inclusion2 decks22 decks
8%synergy
Transcendent Master
9.1%inclusion2 decks22 decks
9%synergy
Yes Man, Personal Securitron
9.1%inclusion2 decks22 decks
7%synergy
Shadowheart, Dark Justiciar
9.1%inclusion2 decks22 decks
9%synergy
Master of Ceremonies
9.1%inclusion2 decks22 decks
8%synergy
Instants
Anguished Unmaking
41%inclusion9 decks22 decks
7%synergy
Deflecting Swat
36%inclusion8 decks22 decks
21%synergy
Swords to Plowshares
36%inclusion8 decks22 decks
-26%synergy
You Are Already Dead
32%inclusion7 decks22 decks
30%synergy
Generous Gift
32%inclusion7 decks22 decks
14%synergy
Malakir Rebirth
27%inclusion6 decks22 decks
22%synergy
Mirrodin Avenged
23%inclusion5 decks22 decks
22%synergy
Crackling Doom
23%inclusion5 decks22 decks
6%synergy
Deadly Rollick
18%inclusion4 decks22 decks
7%synergy
Chaos Warp
18%inclusion4 decks22 decks
2%synergy
Final Showdown
18%inclusion4 decks22 decks
16%synergy
Fracture
18%inclusion4 decks22 decks
12%synergy
Inevitable Defeat
18%inclusion3 decks17 decks
12%synergy
Continue?
17%inclusion1 decks6 decks
16%synergy
Untimely Malfunction
15%inclusion3 decks20 decks
10%synergy
Everybody Lives!
14%inclusion3 decks22 decks
13%synergy
Wear // Tear
14%inclusion3 decks22 decks
2%synergy
Big Score
14%inclusion3 decks22 decks
3%synergy
Legion Leadership
14%inclusion3 decks22 decks
9%synergy
Offer Immortality
14%inclusion3 decks22 decks
13%synergy
Galadriel's Dismissal
14%inclusion3 decks22 decks
12%synergy
Restoration Magic
13%inclusion2 decks16 decks
10%synergy
Loran's Escape
9.1%inclusion2 decks22 decks
8%synergy
Whisper of the Dross
9.1%inclusion2 decks22 decks
9%synergy
Return the Favor
9.1%inclusion2 decks22 decks
7%synergy
Deadly Dispute
9.1%inclusion2 decks22 decks
-14%synergy
Flawless Maneuver
9.1%inclusion2 decks22 decks
-5%synergy
Flare of Fortitude
9.1%inclusion2 decks22 decks
6%synergy
Dark Ritual
9.1%inclusion2 decks22 decks
-8%synergy
Rakdos Charm
9.1%inclusion2 decks22 decks
0%synergy
Soul Shatter
9.1%inclusion2 decks22 decks
7%synergy
Tibalt's Trickery
9.1%inclusion2 decks22 decks
5%synergy
Despark
9.1%inclusion2 decks22 decks
-5%synergy
Demand Answers
9.1%inclusion2 decks22 decks
4%synergy
Touch of Moonglove
9.1%inclusion2 decks22 decks
9%synergy
Sejiri Shelter
9.1%inclusion2 decks22 decks
7%synergy
Reprieve
9.1%inclusion2 decks22 decks
6%synergy
Valakut Awakening
9.1%inclusion2 decks22 decks
6%synergy
Protection Magic
6.3%inclusion1 decks16 decks
6%synergy
Sorceries
Mythos of Snapdax
36%inclusion8 decks22 decks
31%synergy
Steelshaper's Gift
36%inclusion8 decks22 decks
33%synergy
Open the Armory
32%inclusion7 decks22 decks
28%synergy
Painful Truths
27%inclusion6 decks22 decks
19%synergy
Night's Whisper
27%inclusion6 decks22 decks
14%synergy
Vandalblast
23%inclusion5 decks22 decks
12%synergy
Call of the Death-Dweller
23%inclusion5 decks22 decks
22%synergy
Drown in Ichor
23%inclusion5 decks22 decks
22%synergy
Read the Bones
18%inclusion4 decks22 decks
9%synergy
Blasphemous Act
18%inclusion4 decks22 decks
-5%synergy
Damn
18%inclusion4 decks22 decks
0%synergy
Sevinne's Reclamation
14%inclusion3 decks22 decks
6%synergy
Secret Rendezvous
14%inclusion3 decks22 decks
12%synergy
Single Combat
14%inclusion3 decks22 decks
12%synergy
Wheel of Fortune
14%inclusion3 decks22 decks
10%synergy
Toxic Deluge
14%inclusion3 decks22 decks
5%synergy
Chandra's Ignition
14%inclusion3 decks22 decks
12%synergy
Wheel of Misfortune
9.1%inclusion2 decks22 decks
8%synergy
Mandate of Abaddon
9.1%inclusion2 decks22 decks
9%synergy
Damning Verdict
9.1%inclusion2 decks22 decks
8%synergy
Faithless Looting
9.1%inclusion2 decks22 decks
-6%synergy
Unearth
9.1%inclusion2 decks22 decks
7%synergy
Agadeem's Awakening
9.1%inclusion2 decks22 decks
7%synergy
Make an Example
9.1%inclusion2 decks22 decks
9%synergy
Gamble
9.1%inclusion2 decks22 decks
3%synergy
Alliance of Arms
9.1%inclusion2 decks22 decks
9%synergy
Bloodsoaked Insight
9.1%inclusion2 decks22 decks
7%synergy
Sign in Blood
9.1%inclusion2 decks22 decks
1%synergy
Sundering Eruption
9.1%inclusion2 decks22 decks
6%synergy
Wanderer's Strike
9.1%inclusion2 decks22 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
Vorpal Sword
41%inclusion9 decks22 decks
39%synergy
Gorgon Flail
36%inclusion8 decks22 decks
36%synergy
Illusionist's Bracers
32%inclusion7 decks22 decks
30%synergy
Magewright's Stone
27%inclusion6 decks22 decks
26%synergy
Swiftfoot Boots
27%inclusion6 decks22 decks
-4%synergy
Quietus Spike
23%inclusion5 decks22 decks
22%synergy
Glaring Spotlight
18%inclusion4 decks22 decks
18%synergy
Halo Fountain
18%inclusion4 decks22 decks
18%synergy
Mithril Coat
18%inclusion4 decks22 decks
13%synergy
The Fire Nation Drill
18%inclusion2 decks11 decks
18%synergy
Genesis Chamber
14%inclusion3 decks22 decks
13%synergy
Thousand-Year Elixir
14%inclusion3 decks22 decks
13%synergy
Hunter's Blowgun
14%inclusion3 decks22 decks
13%synergy
Lightning Greaves
14%inclusion3 decks22 decks
-21%synergy
Dowsing Dagger
14%inclusion3 decks22 decks
13%synergy
Hammer of Nazahn
14%inclusion3 decks22 decks
12%synergy
Dissection Tools
11%inclusion2 decks19 decks
10%synergy
Robe of Stars
9.1%inclusion2 decks22 decks
8%synergy
Contagion Clasp
9.1%inclusion2 decks22 decks
9%synergy
Embercleave
9.1%inclusion2 decks22 decks
6%synergy
Skullclamp
9.1%inclusion2 decks22 decks
-20%synergy
Whispersilk Cloak
9.1%inclusion2 decks22 decks
3%synergy
Tome of Legends
9.1%inclusion2 decks22 decks
8%synergy
Sunforger
9.1%inclusion2 decks22 decks
6%synergy
Brotherhood Regalia
9.1%inclusion2 decks22 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
All-Out Assault
44%inclusion7 decks16 decks
32%synergy
Gift of Doom
32%inclusion7 decks22 decks
31%synergy
Fighter Class
32%inclusion7 decks22 decks
29%synergy
Black Market Connections
32%inclusion7 decks22 decks
16%synergy
Reconnaissance
27%inclusion6 decks22 decks
16%synergy
Agent of the Shadow Thieves
23%inclusion5 decks22 decks
22%synergy
At Knifepoint
23%inclusion5 decks22 decks
21%synergy
Revel in Riches
23%inclusion5 decks22 decks
16%synergy
Trouble in Pairs
23%inclusion5 decks22 decks
18%synergy
Eye of Nidhogg
19%inclusion3 decks16 decks
18%synergy
Search for Dagger
17%inclusion2 decks12 decks
16%synergy
Aspect of Gorgon
14%inclusion3 decks22 decks
13%synergy
Sigarda's Aid
14%inclusion3 decks22 decks
11%synergy
Kaya's Ghostform
14%inclusion3 decks22 decks
11%synergy
Court of Ardenvale
14%inclusion3 decks22 decks
12%synergy
Land Tax
14%inclusion3 decks22 decks
7%synergy
Smuggler's Share
9.1%inclusion2 decks22 decks
7%synergy
Grasp of Fate
9.1%inclusion2 decks22 decks
8%synergy
Black Market
9.1%inclusion2 decks22 decks
4%synergy
Ghoulish Impetus
9.1%inclusion2 decks22 decks
8%synergy
Gift of Immortality
9.1%inclusion2 decks22 decks
8%synergy
Forge Anew
9.1%inclusion2 decks22 decks
7%synergy
Rakdos Joins Up
9.1%inclusion2 decks22 decks
7%synergy
Feast of the Victorious Dead
9.1%inclusion2 decks22 decks
8%synergy
Death Pits of Rath
9.1%inclusion2 decks22 decks
9%synergy
Curse of Opulence
9.1%inclusion2 decks22 decks
3%synergy
Nowhere to Run
9.1%inclusion2 decks22 decks
9%synergy
Ghostly Prison
9.1%inclusion2 decks22 decks
2%synergy
Phyrexian Arena
9.1%inclusion2 decks22 decks
-9%synergy
Sticky Fingers
9.1%inclusion2 decks22 decks
8%synergy
Spiteful Banditry
9.1%inclusion2 decks22 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
9.1%inclusion2 decks22 decks
9%synergy
Utility Lands
Vault of the Archangel
36%inclusion8 decks22 decks
14%synergy
Bojuka Bog
32%inclusion7 decks22 decks
1%synergy
Detection Tower
23%inclusion5 decks22 decks
22%synergy
Karn's Bastion
23%inclusion5 decks22 decks
22%synergy
Urborg, Tomb of Yawgmoth
23%inclusion5 decks22 decks
9%synergy
Urza's Saga
18%inclusion4 decks22 decks
14%synergy
Rogue's Passage
18%inclusion4 decks22 decks
-6%synergy
Buried Ruin
14%inclusion3 decks22 decks
10%synergy
Scavenger Grounds
14%inclusion3 decks22 decks
12%synergy
Command Beacon
14%inclusion3 decks22 decks
8%synergy
Eiganjo, Seat of the Empire
14%inclusion3 decks22 decks
7%synergy
Takenuma, Abandoned Mire
14%inclusion3 decks22 decks
6%synergy
Axgard Armory
14%inclusion3 decks22 decks
12%synergy
Shizo, Death's Storehouse
9.1%inclusion2 decks22 decks
2%synergy
Maze of Ith
9.1%inclusion2 decks22 decks
6%synergy
Minas Tirith
9.1%inclusion2 decks22 decks
1%synergy
Field of the Dead
9.1%inclusion2 decks22 decks
8%synergy
Susur Secundi, Void Altar
6.7%inclusion1 decks15 decks
5%synergy
Mana Artifacts
Arcane Signet
82%inclusion18 decks22 decks
-4%synergy
Sol Ring
82%inclusion18 decks22 decks
-7%synergy
Patriar's Seal
45%inclusion10 decks22 decks
43%synergy
Talisman of Conviction
41%inclusion9 decks22 decks
-1%synergy
Talisman of Hierarchy
41%inclusion9 decks22 decks
0%synergy
Talisman of Indulgence
23%inclusion5 decks22 decks
-14%synergy
Fellwar Stone
23%inclusion5 decks22 decks
-5%synergy
Commander's Sphere
18%inclusion4 decks22 decks
4%synergy
Boros Signet
14%inclusion3 decks22 decks
-14%synergy
Chromatic Lantern
14%inclusion3 decks22 decks
3%synergy
Mind Stone
14%inclusion3 decks22 decks
5%synergy
Aetheric Amplifier
12%inclusion2 decks17 decks
11%synergy
Rakdos Signet
9.1%inclusion2 decks22 decks
-20%synergy
Cursed Mirror
9.1%inclusion2 decks22 decks
6%synergy
Bandit's Haul
9.1%inclusion2 decks22 decks
8%synergy
Hourglass of the Lost
9.1%inclusion2 decks22 decks
9%synergy
Orzhov Signet
9.1%inclusion2 decks22 decks
-22%synergy
Bounty Board
9.1%inclusion2 decks22 decks
7%synergy
Chrome Mox
9.1%inclusion2 decks22 decks
4%synergy
The Soul Stone
7.1%inclusion1 decks14 decks
4%synergy
Lands
Plains
100%inclusion22 decks22 decks
5%synergy
Swamp
95%inclusion21 decks22 decks
0%synergy
Mountain
95%inclusion21 decks22 decks
2%synergy
Command Tower
91%inclusion20 decks22 decks
-1%synergy
Forbidden Orchard
77%inclusion17 decks22 decks
75%synergy
Sacred Foundry
64%inclusion14 decks22 decks
19%synergy
Godless Shrine
64%inclusion14 decks22 decks
16%synergy
Savai Triome
59%inclusion13 decks22 decks
21%synergy
Blood Crypt
59%inclusion13 decks22 decks
15%synergy
Exotic Orchard
55%inclusion12 decks22 decks
2%synergy
Arid Mesa
55%inclusion12 decks22 decks
23%synergy
Marsh Flats
55%inclusion12 decks22 decks
23%synergy
Spectator Seating
50%inclusion11 decks22 decks
19%synergy
Vault of Champions
50%inclusion11 decks22 decks
18%synergy
Bloodstained Mire
50%inclusion11 decks22 decks
17%synergy
Nomad Outpost
45%inclusion10 decks22 decks
-13%synergy
Sundown Pass
41%inclusion9 decks22 decks
20%synergy
Dragonskull Summit
41%inclusion9 decks22 decks
-11%synergy
Luxury Suite
41%inclusion9 decks22 decks
10%synergy
Caves of Koilos
36%inclusion8 decks22 decks
-3%synergy
Shattered Landscape
36%inclusion8 decks22 decks
18%synergy
Shattered Sanctum
36%inclusion8 decks22 decks
12%synergy
Haunted Ridge
36%inclusion8 decks22 decks
17%synergy
Fetid Heath
32%inclusion7 decks22 decks
11%synergy
Battlefield Forge
32%inclusion7 decks22 decks
-9%synergy
Isolated Chapel
32%inclusion7 decks22 decks
-21%synergy
Clifftop Retreat
32%inclusion7 decks22 decks
-19%synergy
Sulfurous Springs
32%inclusion7 decks22 decks
4%synergy
Smoldering Marsh
27%inclusion6 decks22 decks
-9%synergy
Rugged Prairie
27%inclusion6 decks22 decks
10%synergy
Malakir Rebirth
27%inclusion6 decks22 decks
22%synergy
Orzhov Basilica
27%inclusion6 decks22 decks
14%synergy
Fabled Passage
23%inclusion5 decks22 decks
15%synergy
Badlands
23%inclusion5 decks22 decks
10%synergy
Plateau
23%inclusion5 decks22 decks
11%synergy
Scrubland
23%inclusion5 decks22 decks
11%synergy
Mana Confluence
23%inclusion5 decks22 decks
13%synergy
Prismatic Vista
18%inclusion4 decks22 decks
14%synergy
Rakdos Carnarium
18%inclusion4 decks22 decks
7%synergy
Graven Cairns
18%inclusion4 decks22 decks
6%synergy
Boros Garrison
18%inclusion4 decks22 decks
6%synergy
Plaza of Heroes
18%inclusion4 decks22 decks
14%synergy
Needleverge Pathway
18%inclusion4 decks22 decks
10%synergy
City of Brass
18%inclusion4 decks22 decks
8%synergy
Silent Clearing
18%inclusion4 decks22 decks
14%synergy
Terramorphic Expanse
14%inclusion3 decks22 decks
-5%synergy
Brightclimb Pathway
14%inclusion3 decks22 decks
5%synergy
Shadowy Backstreet
14%inclusion3 decks22 decks
3%synergy
Reflecting Pool
14%inclusion3 decks22 decks
6%synergy
Mount Doom
14%inclusion3 decks22 decks
10%synergy