Kelsien, the Plague (Commander) - Activated Abilities

Alternate Names:

Altaïr, Brotherhood MentorAltaïr, Brotherhood Mentor

Kelsien, the Plague
Rank #386
21decks
As CommanderAs CardAverage DeckDecksView Precon
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Background image for Rebuilding Kelsien, the Plague with Avatar: The Last Airbender Eternal
Ezra Sassaman
Nov 20, 2025
Ezra Sassaman
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.
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Basilisk Collar
95%inclusion20 decks21 decks
91%synergy
Shay Cormac
88%inclusion15 decks17 decks
85%synergy
Rune of Mortality
81%inclusion17 decks21 decks
79%synergy
Minthara, Merciless Soul
81%inclusion17 decks21 decks
79%synergy
Falthis, Shadowcat Familiar
76%inclusion16 decks21 decks
75%synergy
Drumbellower
76%inclusion16 decks21 decks
74%synergy
Otharri, Suns' Glory
76%inclusion16 decks21 decks
70%synergy
Mari, the Killing Quill
76%inclusion16 decks21 decks
69%synergy
Vorpal Sword
71%inclusion15 decks21 decks
69%synergy
Gorgon's Head
67%inclusion14 decks21 decks
65%synergy
Top Cards
Morbid Opportunist
76%inclusion16 decks21 decks
59%synergy
Humble Defector
62%inclusion13 decks21 decks
59%synergy
General's Enforcer
62%inclusion13 decks21 decks
53%synergy
Sting, the Glinting Dagger
62%inclusion13 decks21 decks
60%synergy
Swiftfoot Boots
62%inclusion13 decks21 decks
30%synergy
Thornbite Staff
62%inclusion13 decks21 decks
60%synergy
Taii Wakeen, Perfect Shot
61%inclusion11 decks18 decks
60%synergy
Magda, the Hoardmaster
60%inclusion12 decks20 decks
58%synergy
Termination Facilitator
57%inclusion12 decks21 decks
55%synergy
Maha, Its Feathers Night
56%inclusion9 decks16 decks
55%synergy
Game Changers
Demonic Tutor
29%inclusion6 decks21 decks
9%synergy
Smothering Tithe
19%inclusion4 decks21 decks
-7%synergy
Teferi's Protection
14%inclusion3 decks21 decks
-6%synergy
Enlightened Tutor
14%inclusion3 decks21 decks
2%synergy
Vampiric Tutor
14%inclusion3 decks21 decks
-1%synergy
Orcish Bowmasters
10%inclusion2 decks21 decks
4%synergy
Creatures
Mathas, Fiend Seeker
48%inclusion10 decks21 decks
45%synergy
White Plume Adventurer
48%inclusion10 decks21 decks
46%synergy
Harvester of Souls
48%inclusion10 decks21 decks
44%synergy
Daxos the Returned
48%inclusion10 decks21 decks
47%synergy
Lae'zel, Vlaakith's Champion
48%inclusion10 decks21 decks
46%synergy
Ertha Jo, Frontier Mentor
44%inclusion8 decks18 decks
44%synergy
Mother of Runes
43%inclusion9 decks21 decks
35%synergy
Goblin Sharpshooter
38%inclusion8 decks21 decks
37%synergy
Qarsi Revenant
38%inclusion3 decks8 decks
34%synergy
Marvin, Murderous Mimic
33%inclusion5 decks15 decks
32%synergy
Void Beckoner
33%inclusion7 decks21 decks
33%synergy
Sun Titan
33%inclusion7 decks21 decks
23%synergy
Blood Cultist
29%inclusion6 decks21 decks
28%synergy
Athreos, Shroud-Veiled
29%inclusion6 decks21 decks
27%synergy
Massacre Girl, Known Killer
29%inclusion6 decks21 decks
26%synergy
Kalemne, Disciple of Iroas
29%inclusion6 decks21 decks
28%synergy
Zagras, Thief of Heartbeats
24%inclusion5 decks21 decks
23%synergy
Slaughter Specialist
24%inclusion5 decks21 decks
23%synergy
Cunning Sparkmage
24%inclusion5 decks21 decks
24%synergy
Akiri, Fearless Voyager
24%inclusion5 decks21 decks
21%synergy
Bureau Headmaster
24%inclusion4 decks17 decks
23%synergy
Robaran Mercenaries
19%inclusion4 decks21 decks
19%synergy
Blood Artist
19%inclusion4 decks21 decks
1%synergy
Esper Sentinel
19%inclusion4 decks21 decks
0%synergy
Puresteel Paladin
19%inclusion4 decks21 decks
15%synergy
Ankle Shanker
14%inclusion3 decks21 decks
11%synergy
Zulaport Cutthroat
14%inclusion3 decks21 decks
4%synergy
Queen Marchesa
14%inclusion3 decks21 decks
8%synergy
Archetype of Finality
14%inclusion3 decks21 decks
13%synergy
Witch Enchanter
12%inclusion2 decks17 decks
6%synergy
Archivist of Oghma
10%inclusion2 decks21 decks
7%synergy
Deathbringer Thoctar
10%inclusion2 decks21 decks
9%synergy
Stoneforge Mystic
10%inclusion2 decks21 decks
7%synergy
Assault Intercessor
10%inclusion2 decks21 decks
9%synergy
Species Specialist
10%inclusion2 decks21 decks
7%synergy
Teysa Karlov
10%inclusion2 decks21 decks
2%synergy
Knight of the White Orchid
10%inclusion2 decks21 decks
5%synergy
Torbran, Thane of Red Fell
10%inclusion2 decks21 decks
9%synergy
Massacre Wurm
10%inclusion2 decks21 decks
9%synergy
Stonehewer Giant
10%inclusion2 decks21 decks
8%synergy
Tor Wauki the Younger
10%inclusion2 decks21 decks
9%synergy
Norn's Choirmaster
10%inclusion2 decks21 decks
9%synergy
Assassin Initiate
5.9%inclusion1 decks17 decks
5%synergy
Towering Viewpoint
5.9%inclusion1 decks17 decks
6%synergy
Poison-Blade Mentor
5.9%inclusion1 decks17 decks
5%synergy
Marionette Apprentice
5.9%inclusion1 decks17 decks
-1%synergy
Boggart Trawler
5.9%inclusion1 decks17 decks
4%synergy
Arno Dorian
5.9%inclusion1 decks17 decks
4%synergy
Roshan, Hidden Magister
5.9%inclusion1 decks17 decks
5%synergy
Templar Knight
5.9%inclusion1 decks17 decks
6%synergy
Instants
Boros Charm
52%inclusion11 decks21 decks
22%synergy
You Are Already Dead
52%inclusion11 decks21 decks
50%synergy
Fracture
48%inclusion10 decks21 decks
41%synergy
Mirrodin Avenged
43%inclusion9 decks21 decks
42%synergy
Crackling Doom
43%inclusion9 decks21 decks
26%synergy
Stroke of Midnight
38%inclusion8 decks21 decks
26%synergy
Swords to Plowshares
33%inclusion7 decks21 decks
-29%synergy
Generous Gift
33%inclusion7 decks21 decks
14%synergy
Wear // Tear
29%inclusion6 decks21 decks
17%synergy
Dawn's Truce
25%inclusion4 decks16 decks
18%synergy
Deflecting Swat
24%inclusion5 decks21 decks
9%synergy
Bladebrand
19%inclusion4 decks21 decks
18%synergy
Offer Immortality
19%inclusion4 decks21 decks
18%synergy
Deadly Rollick
14%inclusion3 decks21 decks
4%synergy
Chaos Warp
14%inclusion3 decks21 decks
-2%synergy
Dire Tactics
14%inclusion3 decks21 decks
11%synergy
Flawless Maneuver
14%inclusion3 decks21 decks
0%synergy
Battle-Rage Blessing
14%inclusion3 decks21 decks
14%synergy
Rakdos Charm
14%inclusion3 decks21 decks
5%synergy
Virulent Swipe
14%inclusion3 decks21 decks
14%synergy
Malakir Rebirth
14%inclusion3 decks21 decks
9%synergy
Anguished Unmaking
14%inclusion3 decks21 decks
-20%synergy
Despark
14%inclusion3 decks21 decks
-1%synergy
Touch of Moonglove
14%inclusion3 decks21 decks
14%synergy
Mortify
14%inclusion3 decks21 decks
-1%synergy
Untimely Malfunction
13%inclusion2 decks15 decks
8%synergy
Siege Smash
12%inclusion2 decks17 decks
11%synergy
Toxin Analysis
10%inclusion2 decks21 decks
9%synergy
Terminate
10%inclusion2 decks21 decks
-3%synergy
Tainted Strike
10%inclusion2 decks21 decks
9%synergy
Unbreakable Formation
10%inclusion2 decks21 decks
4%synergy
Path to Exile
10%inclusion2 decks21 decks
-37%synergy
Deflecting Palm
10%inclusion2 decks21 decks
3%synergy
Sudden Spoiling
10%inclusion2 decks21 decks
9%synergy
Rebuff the Wicked
10%inclusion2 decks21 decks
8%synergy
Valakut Awakening
10%inclusion2 decks21 decks
6%synergy
Sazacap's Brew
6.3%inclusion1 decks16 decks
6%synergy
Fell the Profane
5.9%inclusion1 decks17 decks
0%synergy
Great Train Heist
5.6%inclusion1 decks18 decks
1%synergy
Rustler Rampage
5.6%inclusion1 decks18 decks
5%synergy
Sorceries
Open the Armory
48%inclusion10 decks21 decks
43%synergy
Mythos of Snapdax
48%inclusion10 decks21 decks
42%synergy
Painful Truths
43%inclusion9 decks21 decks
34%synergy
Ruinous Ultimatum
43%inclusion9 decks21 decks
4%synergy
Vandalblast
33%inclusion7 decks21 decks
22%synergy
Tempt with Bunnies
25%inclusion4 decks16 decks
24%synergy
Read the Bones
24%inclusion5 decks21 decks
14%synergy
Call of the Death-Dweller
24%inclusion5 decks21 decks
23%synergy
Farewell
19%inclusion4 decks21 decks
8%synergy
Night's Whisper
19%inclusion4 decks21 decks
6%synergy
Steelshaper's Gift
19%inclusion4 decks21 decks
16%synergy
Austere Command
10%inclusion2 decks21 decks
2%synergy
Blasphemous Act
10%inclusion2 decks21 decks
-13%synergy
Damn
10%inclusion2 decks21 decks
-9%synergy
Sign in Blood
10%inclusion2 decks21 decks
1%synergy
Rip Apart
10%inclusion2 decks21 decks
8%synergy
Grim Tutor
10%inclusion2 decks21 decks
5%synergy
Sundering Eruption
5.9%inclusion1 decks17 decks
3%synergy
Requisition Raid
5.6%inclusion1 decks18 decks
3%synergy
Utility Artifacts
Illusionist's Bracers
52%inclusion11 decks21 decks
51%synergy
Magewright's Stone
52%inclusion11 decks21 decks
51%synergy
Hunter's Blowgun
52%inclusion11 decks21 decks
52%synergy
Quietus Spike
43%inclusion9 decks21 decks
41%synergy
Gorgon Flail
43%inclusion9 decks21 decks
42%synergy
Shadowspear
38%inclusion8 decks21 decks
33%synergy
Glaring Spotlight
33%inclusion7 decks21 decks
33%synergy
The Masamune
29%inclusion2 decks7 decks
28%synergy
Mithril Coat
24%inclusion5 decks21 decks
18%synergy
Thousand-Year Elixir
24%inclusion5 decks21 decks
23%synergy
Battlemage's Bracers
24%inclusion5 decks21 decks
23%synergy
Lightning Greaves
24%inclusion5 decks21 decks
-11%synergy
Sword of the Animist
24%inclusion5 decks21 decks
14%synergy
Robe of Stars
19%inclusion4 decks21 decks
18%synergy
Brotherhood Regalia
18%inclusion3 decks17 decks
14%synergy
Whispersilk Cloak
14%inclusion3 decks21 decks
8%synergy
Hidden Blade
10%inclusion2 decks20 decks
9%synergy
Haystack
10%inclusion2 decks20 decks
8%synergy
Wayfarer's Bauble
10%inclusion2 decks21 decks
1%synergy
Halo Fountain
10%inclusion2 decks21 decks
9%synergy
Hammer of Nazahn
10%inclusion2 decks21 decks
7%synergy
Smoke Bomb
5.9%inclusion1 decks17 decks
5%synergy
Enchantments
Gift of Doom
48%inclusion10 decks21 decks
47%synergy
Dazzling Theater // Prop Room
40%inclusion6 decks15 decks
38%synergy
Fighter Class
38%inclusion8 decks21 decks
35%synergy
Phyrexian Arena
38%inclusion8 decks21 decks
19%synergy
All-Out Assault
38%inclusion3 decks8 decks
25%synergy
Black Market
24%inclusion5 decks21 decks
18%synergy
Revel in Riches
24%inclusion5 decks21 decks
17%synergy
At Knifepoint
22%inclusion4 decks18 decks
21%synergy
Aspect of Gorgon
19%inclusion4 decks21 decks
18%synergy
Forge Anew
19%inclusion4 decks21 decks
16%synergy
Sigarda's Aid
19%inclusion4 decks21 decks
16%synergy
Black Market Connections
19%inclusion4 decks21 decks
3%synergy
Reconnaissance
14%inclusion3 decks21 decks
4%synergy
Grave Betrayal
14%inclusion3 decks21 decks
14%synergy
Kaya's Ghostform
14%inclusion3 decks21 decks
12%synergy
Spiteful Banditry
14%inclusion3 decks21 decks
12%synergy
Retreat to Hagra
10%inclusion2 decks21 decks
9%synergy
Feast of the Victorious Dead
10%inclusion2 decks21 decks
9%synergy
Phyresis
10%inclusion2 decks21 decks
9%synergy
Bastion of Remembrance
10%inclusion2 decks21 decks
-4%synergy
Land Tax
10%inclusion2 decks21 decks
3%synergy
Meathook Massacre II
6.7%inclusion1 decks15 decks
6%synergy
Nowhere to Run
5.9%inclusion1 decks17 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
19%inclusion4 decks21 decks
19%synergy
Utility Lands
Vault of the Archangel
57%inclusion12 decks21 decks
35%synergy
Rogue's Passage
52%inclusion11 decks21 decks
29%synergy
Arcane Lighthouse
48%inclusion10 decks21 decks
46%synergy
Bojuka Bog
33%inclusion7 decks21 decks
2%synergy
Detection Tower
24%inclusion5 decks21 decks
23%synergy
Buried Ruin
19%inclusion4 decks21 decks
16%synergy
Axgard Armory
19%inclusion4 decks21 decks
17%synergy
Karn's Bastion
14%inclusion3 decks21 decks
13%synergy
Sunhome, Fortress of the Legion
14%inclusion3 decks21 decks
10%synergy
Reliquary Tower
14%inclusion3 decks21 decks
-2%synergy
Urborg, Tomb of Yawgmoth
14%inclusion3 decks21 decks
0%synergy
Shizo, Death's Storehouse
10%inclusion2 decks21 decks
2%synergy
Urza's Saga
10%inclusion2 decks21 decks
5%synergy
Monumental Henge
5.9%inclusion1 decks17 decks
5%synergy
Mana Artifacts
Arcane Signet
95%inclusion20 decks21 decks
9%synergy
Sol Ring
95%inclusion20 decks21 decks
6%synergy
Patriar's Seal
76%inclusion16 decks21 decks
74%synergy
Rakdos Signet
48%inclusion10 decks21 decks
16%synergy
Orzhov Signet
48%inclusion10 decks21 decks
14%synergy
Bounty Board
44%inclusion8 decks18 decks
42%synergy
Boros Signet
43%inclusion9 decks21 decks
13%synergy
Talisman of Conviction
33%inclusion7 decks21 decks
-7%synergy
Talisman of Hierarchy
33%inclusion7 decks21 decks
-7%synergy
Talisman of Indulgence
29%inclusion6 decks21 decks
-8%synergy
Fellwar Stone
29%inclusion6 decks21 decks
1%synergy
Commander's Sphere
24%inclusion5 decks21 decks
8%synergy
Aetheric Amplifier
23%inclusion3 decks13 decks
23%synergy
Bandit's Haul
17%inclusion3 decks18 decks
15%synergy
Hourglass of the Lost
5.9%inclusion1 decks17 decks
6%synergy
Lands
Command Tower
100%inclusion21 decks21 decks
8%synergy
Swamp
90%inclusion19 decks21 decks
-5%synergy
Plains
90%inclusion19 decks21 decks
-5%synergy
Mountain
86%inclusion18 decks21 decks
-8%synergy
Dragonskull Summit
67%inclusion14 decks21 decks
16%synergy
Sacred Foundry
62%inclusion13 decks21 decks
18%synergy
Godless Shrine
62%inclusion13 decks21 decks
15%synergy
Clifftop Retreat
62%inclusion13 decks21 decks
13%synergy
Blood Crypt
57%inclusion12 decks21 decks
14%synergy
Isolated Chapel
57%inclusion12 decks21 decks
6%synergy
Nomad Outpost
52%inclusion11 decks21 decks
-6%synergy
Vault of Champions
52%inclusion11 decks21 decks
19%synergy
Savai Triome
48%inclusion10 decks21 decks
9%synergy
Exotic Orchard
48%inclusion10 decks21 decks
-4%synergy
Arid Mesa
48%inclusion10 decks21 decks
16%synergy
Spectator Seating
48%inclusion10 decks21 decks
15%synergy
Marsh Flats
48%inclusion10 decks21 decks
16%synergy
Caves of Koilos
43%inclusion9 decks21 decks
3%synergy
Luxury Suite
43%inclusion9 decks21 decks
11%synergy
Battlefield Forge
38%inclusion8 decks21 decks
-1%synergy
Forbidden Orchard
38%inclusion8 decks21 decks
35%synergy
Shattered Landscape
35%inclusion6 decks17 decks
16%synergy
Terramorphic Expanse
33%inclusion7 decks21 decks
13%synergy
Sulfurous Springs
33%inclusion7 decks21 decks
7%synergy
Bloodstained Mire
33%inclusion7 decks21 decks
1%synergy
Smoldering Marsh
29%inclusion6 decks21 decks
-7%synergy
Evolving Wilds
29%inclusion6 decks21 decks
2%synergy
Path of Ancestry
29%inclusion6 decks21 decks
-9%synergy
Shattered Sanctum
29%inclusion6 decks21 decks
5%synergy
Shadowblood Ridge
24%inclusion5 decks21 decks
9%synergy
Sundown Pass
24%inclusion5 decks21 decks
3%synergy
Plateau
24%inclusion5 decks21 decks
12%synergy
Scrubland
24%inclusion5 decks21 decks
12%synergy
Haunted Ridge
24%inclusion5 decks21 decks
4%synergy
Blightstep Pathway
24%inclusion5 decks21 decks
15%synergy
Badlands
19%inclusion4 decks21 decks
7%synergy
Fetid Heath
19%inclusion4 decks21 decks
0%synergy
Radiant Summit
17%inclusion1 decks6 decks
14%synergy
Brightclimb Pathway
14%inclusion3 decks21 decks
5%synergy
Shadowy Backstreet
14%inclusion3 decks21 decks
4%synergy
Tainted Field
14%inclusion3 decks21 decks
2%synergy
Rugged Prairie
14%inclusion3 decks21 decks
-1%synergy
Malakir Rebirth
14%inclusion3 decks21 decks
9%synergy
Needleverge Pathway
14%inclusion3 decks21 decks
6%synergy
Temple of Silence
14%inclusion3 decks21 decks
-9%synergy
Witch Enchanter
12%inclusion2 decks17 decks
6%synergy
Rakdos Carnarium
10%inclusion2 decks21 decks
-3%synergy
Myriad Landscape
10%inclusion2 decks21 decks
-3%synergy
Concealed Courtyard
10%inclusion2 decks21 decks
4%synergy
Desolate Mire
10%inclusion2 decks21 decks
-2%synergy
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