Ashnod's Altar + Dual Nature Combos

11 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite mana creatures you control can produce Infinite storm count Infinite untap of creatures

Combo 1 with Hare Apparent + Emiel the Blessed

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite colorless mana · Infinite creature tokens · Infinite blinking
Steps
  1. If you have a Hare Apparent in your hand, cast it by paying {1}{W}. If not, activate Emiel by paying {3}, blinking a Hare Apparent.
  2. When Hare Apparent enters the battlefield, it and Dual Nature's first ability trigger.
  3. Resolve the Dual Nature trigger, creating a token copy of Hare Apparent.
  4. When the Hare Apparent token enters the battlefield, it triggers, creating a number of 1/1 Rabbit creature tokens equal to the amount of other creatures you control named Hare Apparent.
  5. Resolve the Hare Apparent trigger from step 2, creating a number of 1/1 Rabbit creature tokens equal to the amount of other creatures you control named Hare Apparent.
  6. Activate Ashnod's Altar twice by sacrificing two Rabbits, adding {C}{C}{C}{C}.
  7. Activate Emiel by paying {3}, blinking a nontoken Hare Apparent.
  8. Hare Apparent, Dual Nature's first ability and Dual Nature's second ability trigger.
  9. Resolve the first Dual Nature trigger, creating a token copy of Hare Apparent.
  10. Repeat from step 4.

Combo 2 with Rot Hulk

Also requires: Rot Hulk Rot Hulk
Results: Infinite colorless mana · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers · Return some creature cards from your graveyard to the battlefield
Show steps
  1. Cast Rot Hulk by paying {5}{B}{B}.
  2. Rot Hulk enters the battlefield, triggering itself and Dual Nature.
  3. Holding priority, activate Ashnod's Altar by sacrificing Rot Hulk, adding {C}{C}.
  4. Dual Nature's second ability triggers, exiling all tokens named Rot Hulk.
  5. Resolve the Rot Hulk trigger from step 2, failing to return anything to the battlefield.
  6. Resolve the Dual Nature trigger from step 2, creating a token copy of Rot Hulk.
  7. The token copy of Rot Hulk enters the battlefield, returning Rot Hulk from your graveyard to the battlefield.
  8. Repeat from step 2.

Combo 3 with Nim Deathmantle + Drizzt Do'Urden

Results: Infinite colorless mana · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Activate Ashnod's Altar by sacrificing Drizzt, adding {C}{C}.
  2. Nim Deathmantle triggers.
  3. Pay {4} for the Nim Deathmantle trigger, returning Drizzt to the battlefield and attaching Nim Deathmantle to it.
  4. Drizzt and Dual Nature trigger.
  5. Resolve the Drizzt trigger, creating a legendary Cat creature token.
  6. Activate Ashnod's Altar by sacrificing the Cat creature token, adding {C}{C}.
  7. Drizzt triggers, putting a number of +1/+1 counters on Drizzt equal to the difference .
  8. Repeat.
  9. Once you have infinite Dual Nature triggers on the stack, resolve each one, creating a token copy of Drizzt.
  10. The token copy of Drizzt triggers.
  11. The token copy of Drizzt is put into your graveyard due to the legend rule.
  12. Resolve the Drizzt trigger, putting a legendary Cat token onto the battlefield.
  13. Activate Ashnod's Altar by sacrificing the Cat token, adding {C}{C}.
  14. Repeat until there are no Dual Nature triggers remaining.

Combo 4 with Heidar, Rimewind Master + Intruder Alarm + Phyrexian Walker

Results: Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Cast Phyrexian Walker by paying {0}.
  2. When Phyrexian Walker enters the battlefield, Intruder Alarm and Dual Nature's first ability triggers.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Dual Nature trigger, creating a token copy of Phyrexian Walker.
  5. Activate Ashnod's Altar by sacrificing the Phyrexian Walker token, adding {C}{C}.
  6. Activate Heidar by paying {2} and tapping it, returning Phyrexian Walker to your hand from the battlefield.
  7. Dual Nature's second ability triggers, exiling nothing.
  8. Repeat.

Combo 5 with Heidar, Rimewind Master + Intruder Alarm + Shield Sphere

Results: Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Cast Shield Sphere by paying {0}.
  2. When Shield Sphere enters the battlefield, Intruder Alarm and Dual Nature's first ability triggers.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Dual Nature trigger, creating a token copy of Shield Sphere.
  5. Activate Ashnod's Altar by sacrificing the Shield Sphere token, adding {C}{C}.
  6. Activate Heidar by paying {2} and tapping it, returning Shield Sphere to your hand from the battlefield.
  7. Dual Nature's second ability triggers, exiling nothing.
  8. Repeat.

Combo 6 with Heidar, Rimewind Master + Intruder Alarm + Ornithopter

Results: Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Cast Ornithopter by paying {0}.
  2. When Ornithopter enters the battlefield, Intruder Alarm and Dual Nature's first ability triggers.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Dual Nature trigger, creating a token copy of Ornithopter.
  5. Activate Ashnod's Altar by sacrificing the Ornithopter token, adding {C}{C}.
  6. Activate Heidar by paying {2} and tapping it, returning Ornithopter to your hand from the battlefield.
  7. Dual Nature's second ability triggers, exiling nothing.
  8. Repeat.

Combo 7 with Heidar, Rimewind Master + Intruder Alarm + Memnite

Results: Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Cast Memnite by paying {0}.
  2. When Memnite enters the battlefield, Intruder Alarm and Dual Nature's first ability triggers.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Dual Nature trigger, creating a token copy of Memnite.
  5. Activate Ashnod's Altar by sacrificing the Memnite token, adding {C}{C}.
  6. Activate Heidar by paying {2} and tapping it, returning Memnite to your hand from the battlefield.
  7. Dual Nature's second ability triggers, exiling nothing.
  8. Repeat.

Combo 8 with Rograkh, Son of Rohgahh + Heidar, Rimewind Master + Intruder Alarm

Results: Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Cast Rograkh by paying {0}.
  2. When Rograkh enters the battlefield, Intruder Alarm and Dual Nature's first ability triggers.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Dual Nature trigger, creating a token copy of Rograkh.
  5. Activate Ashnod's Altar by sacrificing the Rograkh token, adding {C}{C}.
  6. Activate Heidar by paying {2} and tapping it, returning Rograkh to your hand from the battlefield.
  7. Dual Nature's second ability triggers, exiling nothing.
  8. Repeat.

Combo 9 with Heidar, Rimewind Master + Intruder Alarm + Kobolds of Kher Keep

Results: Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Cast Kobolds of Kher Keep by paying {0}.
  2. When Kobolds of Kher Keep enters the battlefield, Intruder Alarm and Dual Nature's first ability triggers.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Dual Nature trigger, creating a token copy of Kobolds of Kher Keep.
  5. Activate Ashnod's Altar by sacrificing the Kobolds of Kher Keep token, adding {C}{C}.
  6. Activate Heidar by paying {2} and tapping it, returning Kobolds of Kher Keep to your hand from the battlefield.
  7. Dual Nature's second ability triggers, exiling nothing.
  8. Repeat.

Combo 10 with Heidar, Rimewind Master + Intruder Alarm + Crookshank Kobolds

Results: Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Cast Crookshank Kobolds by paying {0}.
  2. When Crookshank Kobolds enters the battlefield, Intruder Alarm and Dual Nature's first ability triggers.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Dual Nature trigger, creating a token copy of Crookshank Kobolds.
  5. Activate Ashnod's Altar by sacrificing the Crookshank Kobolds token, adding {C}{C}.
  6. Activate Heidar by paying {2} and tapping it, returning Crookshank Kobolds to your hand from the battlefield.
  7. Dual Nature's second ability triggers, exiling nothing.
  8. Repeat.

Combo 11 with Heidar, Rimewind Master + Intruder Alarm + Crimson Kobolds

Results: Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite storm count · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Cast Crimson Kobolds by paying {0}.
  2. When Crimson Kobolds enters the battlefield, Intruder Alarm and Dual Nature's first ability triggers.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Dual Nature trigger, creating a token copy of Crimson Kobolds.
  5. Activate Ashnod's Altar by sacrificing the Crimson Kobolds token, adding {C}{C}.
  6. Activate Heidar by paying {2} and tapping it, returning Crimson Kobolds to your hand from the battlefield.
  7. Dual Nature's second ability triggers, exiling nothing.
  8. Repeat.
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