Archelos, Lagoon Mystic + Thaumatog Combos

9 known combos featuring both cards in Commander

Infinite landfall triggers Infinitely large creature until end of turn Infinite mana lands you control can produce Infinite death triggers Infinite card draw

Combo 1 with Mirrorpool + Splendid Reclamation

Results: Infinite mana lands you control can produce · Infinite magecraft triggers · Infinite landfall triggers · Infinitely large creature until end of turn
Steps
  1. Cast Splendid Reclamation by paying {3}{G}.
  2. Holding priority, activate any number of lands you control except Mirrorpool by tapping them, adding at least {2}{C}.
  3. Activate Thaumatog by sacrificing a land other than Mirrorpool.
  4. Repeat step 3 until Mirrorpool is the only land you control.
  5. Activate Mirrorpool's second ability by paying {2}{C}, tapping and sacrificing it, copying Splendid Reclamation.
  6. Resolve the Splendid Reclamation copy, returning all land cards from your graveyard to the battlefield untapped due to Archelos.
  7. Repeat from step 2.

Combo 2 with Emeria Shepherd + Aftermath Analyst

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite landfall triggers · Return all nonland permanents from your graveyard to the battlefield · Infinitely large creature until end of turn
Show steps
  1. Activate any number of lands by tapping them, adding at least {3}{G}.
  2. Activate Thaumatog by sacrificing a land.
  3. Repeat step 2 until you control no lands.
  4. Activate Aftermath Analyst by paying {3}{G} and sacrificing it, returning all lands from your graveyard to the battlefield untapped due to Archelos.
  5. When the lands enter, Emeria Shepherd triggers that many times.
  6. Resolve an Emeria Shepherd trigger that was triggered by a Plains, returning Aftermath Analyst from your graveyard to the battlefield.
  7. Resolve all other Emeria Shepherd triggers, returning any number of nonland permanents from your graveyard to either your hand or the battlefield.
  8. Repeat.

Combo 3 with Lumra, Bellow of the Woods + Mirrorpool

Results: Infinite ETB · Infinite death triggers · Infinite self-mill · Infinite mana lands you control can produce · Infinite landfall triggers · Infinitely large creature until end of turn · Put all land cards from your library and graveyard onto the battlefield
Show steps
  1. Activate any number of other lands by tapping them, adding at least {4}{C}.
  2. Activate Thaumatog by sacrificing a land except Mirrorpool.
  3. Repeat step 2 until you control no lands except Mirrorpool.
  4. Activate Mirrorpool's third ability by paying {4}{C}, tapping and sacrificing it, creating a token copy of Lumra.
  5. Put the Lumra token into your graveyard due to the legend rule.
  6. The Lumra token's enters-the-battlefield ability triggers, causing you to mill four cards and return all land cards from your graveyard to the battlefield untapped due to Archelos.
  7. Repeat.

Combo 4 with Shifting Woodland + Aftermath Analyst

Results: Infinite LTB · Infinite sacrifice triggers · Infinite death triggers · Infinite mana lands you control can produce · Infinitely large creature until end of turn · Infinite landfall triggers
Show steps
  1. Activate Thaumatog by sacrificing any land except Shifting Woodland.
  2. Repeat step 1 until you control no other lands except Shifting Woodland.
  3. Activate Shifting Woodland's second ability by paying {2}{G}{G}, causing it to become a copy of Aftermath Analyst until end of turn.
  4. Activate Shifting Woodland by paying {3}{G} and sacrificing it, returning it and all other land cards from your graveyard to the battlefield untapped due to Arcehlos.
  5. Activate any number of lands by tapping them, adding at least {5}{G}{G}{G}.
  6. Repeat.

Combo 5 with Lumra, Bellow of the Woods + Port of Karfell

Results: Infinite death triggers · Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinitely large creature until end of turn · Infinite mana lands you control can produce · Infinite sacrifice triggers · Infinite self-mill · Put all land cards from your library and graveyard onto the battlefield
Show steps
  1. Activate any number of other lands you control by tapping them, adding at least {3}{U}{B}{B}.
  2. Activate Thaumatog's first ability by sacrificing a land other than Port of Karfell, giving Thaumatog +1/+1 until end of turn.
  3. Repeat step 2 until you control no other lands except Port of Karfell.
  4. Activate Port of Karfell's second ability by paying {3}{U}{B}{B}, tapping and sacrificing it, causing you to mill four cards and return Lumra from your graveyard to the battlefield tapped.
  5. Lumra enters the battlefield and dies as a state-based action due to having 0 toughness.
  6. Lumra's enter-the-battlefield ability triggers, causing you to mill four cards and return all land cards from your graveyard to the battlefield untapped due to Archelos.
  7. Repeat.

Combo 6 with Mystic Sanctuary + Second Sunrise + Aesi, Tyrant of Gyre Strait

Results: Infinite card draw · Infinite draw triggers · Near-infinite landfall triggers · Near-infinitely large creature until end of turn · Near-infinite magecraft triggers · Near-infinite mana lands you control can produce · Near-infinite storm count
Show steps
  1. Activate Mystic Sanctuary and two Plains by tapping them, adding at least {1}{W}{W}.
  2. Activate Thaumatog's first ability three times by sacrificing Mystic Sanctuary and two Plains, giving Thaumatog +3/+3 until end of turn.
  3. Cast Second Sunrise by paying {1}{W}{W}, returning all land cards put into your graveyard this turn to the battlefield untapped due to Archelos.
  4. When each land enters the battlefield, Aesi triggers that many times, and Mystic Sanctuary triggers once.
  5. Resolve the Mystic Sanctuary trigger, putting Second Sunrise on top of your library from your graveyard.
  6. Resolve the Aesi triggers, causing you to draw that many cards.
  7. Repeat.
  8. If you control additional lands, you may sacrifice them as well to get additional mana and triggers.

Combo 7 with Mystic Sanctuary + Second Sunrise + Tatyova, Benthic Druid

Results: Infinite card draw · Infinite draw triggers · Near-infinite lifegain · Near-infinite lifegain triggers · Near-infinitely large creature until end of turn · Near-infinite magecraft triggers · Near-infinite mana lands you control can produce · Near-infinite storm count · Near-infinite landfall triggers
Show steps
  1. Activate Mystic Sanctuary and two Plains by tapping them, adding at least {1}{W}{W}.
  2. Activate Thaumatog's first ability three times by sacrificing Mystic Sanctuary and two Plains, giving Thaumatog +3/+3 until end of turn.
  3. Cast Second Sunrise by paying {1}{W}{W}, returning all land cards put into your graveyard this turn to the battlefield untapped due to Archelos.
  4. When each land enters the battlefield, Tatyova triggers that many times, and Mystic Sanctuary triggers once.
  5. Resolve the Mystic Sanctuary trigger, putting Second Sunrise on top of your library from your graveyard.
  6. Resolve the Tatyova triggers, causing you to draw that many cards and gain that much life.
  7. Repeat.
  8. If you control additional lands, you may sacrifice them as well to get additional mana and triggers.

Combo 8 with Mystic Sanctuary + Splendid Reclamation + Aesi, Tyrant of Gyre Strait

Results: Infinite card draw · Infinite draw triggers · Near-infinite landfall triggers · Near-infinite magecraft triggers · Near-infinite mana lands you control can produce · Near-infinite storm count · Near-infinitely large creature until end of turn
Show steps
  1. Activate Mystic Sanctuary, a Forest and two other lands by tapping them, adding at least {3}{G}.
  2. Activate Thaumatog's first ability four times by sacrificing Mystic Sanctuary, a Forest and two other lands, giving Thaumatog +4/+4 until end of turn.
  3. Cast Splendid Reclamation by paying {3}{G}, returning all land cards from your graveyard to the battlefield untapped due to Archelos.
  4. When each land enters the battlefield, Aesi triggers that many times, and Mystic Sanctuary triggers once.
  5. Resolve the Mystic Sanctuary trigger, putting Splendid Reclamation on top of your library from your graveyard.
  6. Resolve the Aesi triggers, causing you to draw that many cards.
  7. Repeat.
  8. If you control additional lands, you may sacrifice them as well to get additional mana and triggers.

Combo 9 with Mystic Sanctuary + Splendid Reclamation + Tatyova, Benthic Druid

Results: Infinite card draw · Infinite draw triggers · Near-infinite landfall triggers · Near-infinite lifegain · Near-infinite lifegain triggers · Near-infinitely large creature until end of turn · Near-infinite magecraft triggers · Near-infinite mana lands you control can produce · Near-infinite storm count
Show steps
  1. Activate Mystic Sanctuary, a Forest and two other lands by tapping them, adding at least {3}{G}.
  2. Activate Thaumatog's first ability four times by sacrificing Mystic Sanctuary, a Forest and two other lands, giving Thaumatog +4/+4 until end of turn.
  3. Cast Splendid Reclamation by paying {3}{G}, returning all land cards from your graveyard to the battlefield untapped due to Archelos.
  4. When each land enters the battlefield, Tatyova triggers that many times, and Mystic Sanctuary triggers once.
  5. Resolve the Mystic Sanctuary trigger, putting Splendid Reclamation on top of your library from your graveyard.
  6. Resolve the Tatyova triggers, causing you to draw that many cards and gain that much life.
  7. Repeat.
  8. If you control additional lands, you may sacrifice them as well to get additional mana and triggers.
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