List the useful 2-4 cards combos in my EDH decks.

Color now mostly used: RUG

Commander now mostly used

  • Kalamax, the Stormsire 风暴君父卡拉马科斯 | combo
  • Xyris, the Writhing Storm 纠拧风暴灾里斯 | mid & token
  • Haldan, Avid Arcanist 热切奥术师哈丹 / Pako, Arcane Retriever 奥术猎犬帕科 | enchantment combo
  • Omnath, Locus of the Roil 狂搅核欧那斯 | landfall / element aggro
  • Animar, Soul of Elements 元素之魂阿尼玛 | combo

Commander now in testing:

  • Brago, King Eternal 不朽国王布莱戈
  • Derevi, Empyrial Tactician 穹光策士德蕾薇
  • Golos, Tireless Pilgrim 不倦朝圣械戈罗斯
  • Sisay, Weatherlight Captain 晴空号船长西赛
  • Omnath, Locus of Creation 生机核欧那斯

Combos in Kalamax

Kalamax, the Stormsire + Reverberate/Twincast… => Infinite large Kalamax => Soul’s fire

  • prerequisites:
    Kalamax tapped
    No instants played this turn
    response the instant or sorcery from other players
    Enough mana to cast spells
  1. Cast any copy instant
  2. Kalamax triggers (first Instant played this turn), copying instant
  3. Have the copy and target the original
  4. Kalamax triggers off of the copying, gaining a +1/+1 counter
  5. The copy resolves, creating another copy
  6. Repeat steps
  7. In your turn you get infinite large Kalamax

Kalamax, the Stormsire + Chandra’s Ignition + Reverberate/Twincast => Infinite damage/large Kalamax

  • prerequisites:
    Kalamax tapped
    No instants played this turn
    Enough mana to cast spells
  1. Cast Chandra’s Ignition, holding priority
  2. Cast Reverberate targeting Chandra’s Ignition
  3. Kalamax triggers (first Instant played this turn), copying Reverberate
  4. Have the copy of Reverberate target the original
  5. Kalamax triggers off of the copying, gaining a +1/+1 counter
  6. The copy of Reverberate resolves, creating another copy
  7. Repeat steps 4-6 until Kalamax is adequately large, then copy Chandra’s Ignition with Reverberate, ending the loop and dealing an arbitrarily large amount of damage to your opponents (and each other creature)

Kalamax, the Stormsire + Ral, Storm Conduit + Reverberate/Twincast… => Infinite damage/large Kalamax

  • prerequisites:
    Kalamax tapped
    No instants played this turn
    response the instant or sorcery from other players
    Enough mana to cast spells
  1. Cast any copy instant, triggering Ral and Kalamax, copying instant
  2. Have the copy and target the original, triggering Ral
  3. Kalamax triggers off of the copying, gaining a +1/+1 counter
  4. The copy resolves, creating another copy, triggering Ral
  5. Repeat steps until Ral trigger infinite times, then copy the first ability other player played, ending the loop and dealing an arbitrarily large amount of damage to your opponents and get infinite large Kalamax

Fury Storm + Ral, Storm Conduit => Infinite damage

  • prerequisites:
    must have cast your commander at least once
    2RR mana available
  1. Cast your instant or sorcery, triggering Ral
  2. Resolve the Ral trigger and respond to the instant or sorcery by casting Fury Storm targeting the instant or sorcery which triggers Fury Storm and Ral
  3. Place the Ral trigger on top and the Fury Storm trigger below it and resolve the Ral trigger
  4. Resolve the Fury Storm trigger targeting the original Fury Storm with the copy which triggers Ral
  5. Resolve the Ral trigger and resolve the Fury Storm copy copying Fury Storm and triggering Ral
  6. Repeat step 5

https://CommanderSpellbook.com/?id=5022

Heart Defence/Chord of Calling => Kiki-Jiki, Mirror Breaker + Aphetto Alchemist/Corridor Monitor => Infinite combat damage + blue mana => Thassa’s Oracle

  • prerequisites:
    Kiki-Jiki, Mirror Breaker and Aphetto Alchemist on the battlefield
    Thassa’s Oracle in hand and UU mana to cast it
  1. Activate Kiki-Jiki, targeting Aphetto Alchemist to create a hasty token copy of it
  2. Activate the token’s ability to untap Kiki-Jiki
  3. Repeat the loop to generate an arbitrarily large number of tapped Aphetto Alchemist tokens, each of which is worth blue mana devotion
  4. Cast Thassa’s Oracle
  5. As your devotion to blue mana is greater than the number of cards in your library, you win the game with its ETB trigger

Primal Amulet + Frantic Search + Narset’s Reversal => Infinite colored mana/card draw/storm count => brain freeze

  • prerequisites:
    primal amulet with 3 counters
    frantic search and narset’s reversal in hand
    access to 1UU mana from lands
  1. cast frantic search for 1U mana (reduced by primal amulet)
  2. let the trigger from primal amulet resolve to transform primal amulet in to primal wellspring
  3. you now have an extra land, use primal wellspring to tap for blue mana and an additional blue mana from an other land to pay for narset’s reversal, creating a copy of narset’s reversal
  4. let the copy of narset’s reversal target the original narset’s reversal to bounce it and create an other copy
  5. the second copy of narset’s reversal targets frantic search, returning it to your hand and creating a copy of frantic search to untap 3 lands (must untap primal wellspring) and loot 2 cards
  6. tap 3 lands for 2U mana and use the blue mana from primal wellspring + 2 mana from the other lands to cast frantic search
  7. let the copy of frantic search resolve to untap 3 lands and loot 2
  8. tap 3 lands for 1U mana and use the blue manaa from primal wellspring blue mana from the other lands start the loop again at step 3 by casting narset’s reversal from primal wellspring, netting you 1 mana and 2 loots each loop

https://commanderspellbook.com/?id=4843

Mizzix of the Izmagnus + Bonus Round + Frantic Search + Narset’s Reversal => Infinite mana/loot/storm count => brain freeze

  • prerequisites:
    Bonus Round, Frantic Search and Narset’s Reversal in hand
    Mizzix on the battlefield
    You have at least 1 experience counter
    Ability to produce a (R/U)(R/U)(R/U) mana from lands
  1. Cast Bonus Round for RR
  2. Let the Mizzix trigger and bonus round resolve, you now have 2 experience counters
  3. Cast Frantic search for U (reduced by mizzix)
  4. Let the copy from bonus rounds resolve to loot 2 cards, untap 3 lands that can tap for at least UU
  5. Cast Narset’s Reversal for UU, let the copy from bonus rounds resolve, targeting the original Narset’s Reversal
  6. This bounces the original and makes a new copy which targets the original frantic search
  7. This bounces the original frantic search and creates a new copy
  8. Let the frantic search copy resolve to loot 2 cards and untap 3 lands
  9. You now have frantic search and narset’s reversal back in your hand and can start the loop again

https://CommanderSpellbook.com/?id=4930

High Tide + Archaeomancer + Snap => Infinite storm count/colored mana => brain freeze

  • prerequisites:
    All cards in hand
    5 untapped Islands under your control

Tap 1 Island, producing U, to cast High Tide
Tap 2 Islands, producing 4U, to cast Archaeomancer, getting back High Tide
Tap 1 Island, producing 2U, to cast High Tide, floating U
Tap 1 Island, producing 3U to cast Snap to return Archaeomancer and untap two islands, floating 2U
Tap 2 Islands, procuing 6U, to cast Archaeomancer, returning Snap and floating 2U
Repeat steps 4-5

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link:
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MTG Deck Builder
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commander Spellbook
cEDH Decklist Database