Altar of Dementia + Kami of Whispered Hopes Combos

4 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite colored mana Infinite sacrifice triggers Infinite death triggers

Combo 1 with Sin, Unending Cataclysm + Intruder Alarm

Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count · Infinite mana creatures you control can produce · Infinite untap of creatures · Infinite commander casts · Infinite +1/+1 counters on a creature · Infinite untap of creatures you control
Steps
  1. Cast Sin either from your hand or command zone by paying {5}{G}{U} plus commander tax if applicable.
  2. As Sin enters, remove all counters from all artifacts, enchantments and creatures you control, putting twice that many +1/+1 counters on Sin plus one due to Kami of Whispered Hopes.
  3. When Sin enters, Intruder Alarm triggers, untapping all creatures.
  4. Activate Altar of Dementia by sacrificing Sin.
  5. Choose to return Sin to the command zone from your graveyard.
  6. When Sin dies, it triggers, putting its counters plus an additional +1/+1 counter on Kami of Whispered Hopes.
  7. Resolve the Altar of Dementia ability.
  8. Activate Kami of Whispered Hopes by tapping it, adding an amount of {G} or {U} equal to its power.
  9. Repeat.

Combo 2 with Sin, Unending Cataclysm + Thornbite Staff

Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count · Infinite commander casts · Infinite +1/+1 counters on a creature
Show steps
  1. Cast Sin either from your hand or command zone by paying {5}{G}{U} plus commander tax if applicable.
  2. As Sin enters, remove all counters from all artifacts, enchantments and creatures you control, putting twice that many +1/+1 counters plus one due to Kami of Whispered Hopes on Sin.
  3. Activate Altar of Dementia by sacrificing Sin.
  4. Choose to return Sin to the command zone from your graveyard.
  5. When Sin dies, it and Kami of Whispered Hopes trigger.
  6. When Sin dies, it triggers, putting its counters plus an additional +1/+1 counter on Kami of Whispered Hopes.
  7. Resolve the Kami of Whispered Hopes trigger, untapping it.
  8. Resolve the Altar of Dementia ability.
  9. Activate Kami of Whispered Hopes by tapping it, adding an amount of {G} or {U} equal to its power.
  10. Repeat.

Combo 3 with Sin, Unending Cataclysm + Aura of Dominion

Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count · Infinite commander casts · Infinite +1/+1 counters on a creature
Show steps
  1. Cast Sin either from your hand or command zone by paying {5}{G}{U} plus commander tax if applicable.
  2. As Sin enters, remove all counters from all artifacts, enchantments and creatures you control, putting twice that many +1/+1 counters on Sin.
  3. Activate Aura of Dominion by paying {1} and tapping Sin, untapping Kami of Whispered Hopes.
  4. Activate Altar of Dementia by sacrificing Sin.
  5. Choose to return Sin to the command zone from your graveyard.
  6. When Sin dies, it triggers, putting its counters on Kami of Whispered Hopes.
  7. Resolve the Altar of Dementia ability.
  8. Activate Kami of Whispered Hopes by tapping it, adding an amount of {G} or {U} equal to its power.
  9. Repeat.

Combo 4 with Toph, Greatest Earthbender + Power Depot + Crystalline Crawler

Results: Infinite +1/+1 counters on creatures you control · Infinite ETB · Infinite LTB · Infinite colored mana · Infinite death triggers · Infinite landfall triggers · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Play Power Depot, which will enter with a +1/+1 counter on it due to its modular ability
  2. Cast Toph either from your hand or from the command zone by paying {2}{R}{G} plus commander tax if applicable.
  3. When Toph enters, it triggers, earthbending Power Depot and putting a number of +1/+1 counters on Power Depot equal to the mana spent to cast Toph, increased by Kami of Whispered Hopes.
  4. Activate Altar of Dementia by sacrificing Power Depot.
  5. When Power Depot dies, its modular ability and Toph trigger.
  6. Resolve the modular trigger, putting the +1/+1 counters that were on Power Depot onto Crystalline Crawler, increased by Kami of Whispered Hopes.
  7. Resolve the Toph trigger, returning Power Depot from your graveyard to the battlefield tapped. Power Depot will enter with a +1/+1 counter on it due to its modular ability
  8. Resolve the Altar of Dementia ability.
  9. Activate Altar of Dementia by sacrificing Toph. Choose to return Toph from your graveyard to the command zone.
  10. Activate Crystalline Crawler by removing a +1/+1 counter from it, adding {R/G}.
  11. Repeat step 10 until you have enough mana to cast Toph.
  12. Repeat from step 2.
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