Horizon Explorer + Tireless Provisioner Combos

9 known combos featuring both cards in Commander

Near-infinite landfall triggers Put all basic lands from your library onto the battlefield tapped Infinite landfall triggers Infinite LTB Infinite sacrifice triggers

Combo 1 with Ba Sing Se + Ashnod's Altar

Results: Infinite LTB · Infinite sacrifice triggers · Infinite death triggers · Infinite landfall triggers
Steps
  1. Activate Ba Sing Se's second ability by paying {2}{G} and tapping it, earthbending itself.
  2. Activate Ashnod's Altar by sacrificing Ba Sing Se, adding {C}{C}.
  3. When Ba Sing Se dies, it triggers, returning itself from your graveyard to the battlefield untapped due to Horizon Explorer.
  4. When Ba Sing Se enters, Tireless Provisioner triggers, creating a Treasure token.
  5. Activate the Treasure by tapping and sacrificing it, adding {G}.
  6. Repeat.

Combo 2 with Springheart Nantuko + Mutable Explorer

Results: Infinite ETB · Infinite creature tokens · Infinite landfall triggers · Infinite tapped Mutavault land tokens
Show steps
  1. Play a land.
  2. When the land enters, Springheart Nantuko triggers, causing you to pay {1}{G} to create a token copy of Mutable Explorer.
  3. When the Mutable Explorer token enters, it triggers, creating a Mutavault land token that enters untapped due to Horizon Explorer.
  4. When the Mutavault token enters, Springheart Nantuko and Tireless Provisioner trigger.
  5. Holding priority, activate the Mutavault token by tapping it, adding {C}.
  6. Resolve the Tireless Provisioner trigger, creating a Treasure token.
  7. Holding priority, activate the Treasure by tapping and sacrificing it, adding {G}.
  8. Resolve the Springheart Nantuko trigger, causing you to pay {1}{G} to create a token copy of Mutable Explorer.
  9. Repeat from step 3.

Combo 3 with Fertilid + Bristly Bill, Spine Sower

Results: Near-infinite landfall triggers · Put all basic lands from your library onto the battlefield tapped
Show steps
  1. Activate Fertilid by paying {1}{G} and removing a +1/+1 counter from it, causing you to search your library for a basic land card and put it on the battlefield untapped due to Horizon Explorer.
  2. When the basic land enters, Tireless Provisioner and Bristly Bill trigger.
  3. Resolve the Tireless Provisioner trigger, creating a Treasure token.
  4. Activate the Treasure by tapping and sacrificing it, adding {G}.
  5. Resolve the Bristly Bill trigger, putting a +1/+1 counter on Fertilid.
  6. Activate the basic land by tapping it, adding {1}.
  7. Repeat.

Combo 4 with Kodama of the East Tree + Petrified Field + Echoing Deeps

Results: Infinite colored mana · Infinite lifegain triggers · Infinite lifegain · Infinite Treasure tokens · Infinite landfall triggers · Infinite Food tokens
Show steps
  1. Play Petrified Field.
  2. When Petrified Field enters the battlefield, Kodama of the East Tree and Tireless Provisioner trigger.
  3. Resolve the Kodama of the East Tree trigger, putting nothing onto the battlefield.
  4. Holding priority, activate Petrified Field's second ability by tapping and sacrificing it, returning Echoing Deeps from your graveyard to your hand.
  5. Resolve the Tireless Provisioner trigger, creating a token.
  6. When the token enters the battlefield, Kodama of the East Tree triggers, putting Echoing Deeps from your hand onto the battlefield untapped as a copy of Petrified Field.
  7. When Echoing Deeps enters the battlefield, Tireless Provisioner triggers.
  8. Holding priority, activate Echoing Deeps using Petrified Field's second ability by tapping and sacrificing it, returning Petrified Field from your graveyard to your hand.
  9. Resolve the Tireless Provisioner trigger, creating a token.
  10. When the token enters the battlefield, Kodama of the East Tree triggers, putting Petrified Field from your hand onto the battlefield.
  11. When Petrified Field enters the battlefield, Tireless Provisioner triggers.
  12. Repeat from step 4.

Combo 5 with Fertilid + Retreat to Kazandu

Results: Near-infinite landfall triggers · Put all basic lands from your library onto the battlefield tapped
Show steps
  1. Activate Fertilid by paying {1}{G} and removing a +1/+1 counter from it, causing you to search your library for a basic land card and put it on the battlefield untapped due to Horizon Explorer.
  2. When the basic land enters, Tireless Provisioner and Retreat to Kazandu trigger.
  3. Resolve the Tireless Provisioner trigger, creating a Treasure token.
  4. Activate the Treasure by tapping and sacrificing it, adding {G}.
  5. Resolve the Retreat to Kazandu trigger, putting a +1/+1 counter on Fertilid.
  6. Activate the basic land by tapping it, adding {1}.
  7. Repeat.

Combo 6 with Fertilid + Felidar Retreat

Results: Near-infinite landfall triggers · Put all basic lands from your library onto the battlefield tapped
Show steps
  1. Activate Fertilid by paying {1}{G} and removing a +1/+1 counter from it, causing you to search your library for a basic land card and put it on the battlefield untapped due to Horizon Explorer.
  2. When the basic land enters, Tireless Provisioner and Felidar Retreat trigger.
  3. Resolve the Tireless Provisioner trigger, creating a Treasure token.
  4. Activate the Treasure by tapping and sacrificing it, adding {G}.
  5. Resolve the Felidar Retreat trigger, putting a +1/+1 counter on Fertilid.
  6. Activate the basic land by tapping it, adding {1}.
  7. Repeat.

Combo 7 with Fertilid + Roaring Earth

Results: Near-infinite landfall triggers · Put all basic lands from your library onto the battlefield tapped
Show steps
  1. Activate Fertilid by paying {1}{G} and removing a +1/+1 counter from it, causing you to search your library for a basic land card and put it on the battlefield untapped due to Horizon Explorer.
  2. When the basic land enters, Tireless Provisioner and Roaring Earth trigger.
  3. Resolve the Tireless Provisioner trigger, creating a Treasure token.
  4. Activate the Treasure by tapping and sacrificing it, adding {G}.
  5. Resolve the Roaring Earth trigger, putting a +1/+1 counter on Fertilid.
  6. Activate the basic land by tapping it, adding {1}.
  7. Repeat.

Combo 8 with Fertilid + Obuun, Mul Daya Ancestor

Results: Near-infinite landfall triggers · Put all basic lands from your library onto the battlefield tapped
Show steps
  1. Activate Fertilid by paying {1}{G} and removing a +1/+1 counter from it, causing you to search your library for a basic land card and put it on the battlefield untapped due to Horizon Explorer.
  2. When the basic land enters, Tireless Provisioner and Obuun trigger.
  3. Resolve the Tireless Provisioner trigger, creating a Treasure token.
  4. Activate the Treasure by tapping and sacrificing it, adding {G}.
  5. Resolve the Obuun trigger, putting a +1/+1 counter on Fertilid.
  6. Activate the basic land by tapping it, adding {1}.
  7. Repeat.

Combo 9 with Ignis Scientia + Deadeye Navigator

Results: Near-infinite ETB · Near-infinite landfall triggers · Near-infinite LTB
Show steps
  1. Activate Ignis by paying {1}{U}, blinking it.
  2. When Ignis enters, it and Deadeye Navigator's soulbond ability trigger.
  3. Resolve the Deadeye Navigator trigger, repairing it and Ignis.
  4. Resolve the Ignis trigger, causing you to look at the top six cards of your library and put a land card from among them onto the battlefield untapped due to Horizon Explorer
  5. If you put a land onto the battlefield this way, Tireless Provisioner triggers, creating a Treasure token. Activate the Treasure by tapping and sacrificing it, adding {U}.
  6. Activate the land by tapping it, adding at least {1}.
  7. Repeat.
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