Altar of Dementia + Yedora, Grave Gardener Combos

20 known combos featuring both cards in Commander

Infinite death triggers Infinite landfall triggers Infinite LTB Infinite mill Infinite sacrifice triggers

Combo 1 with Life and Limb

Also requires: Life and Limb Life and Limb
Results: Infinite death triggers · Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Steps
  1. Activate Altar of Dementia by sacrificing a nontoken Saproling or creature with changeling.
  2. When the creature dies, Yedora triggers, returning the creature from your graveyard to the battlefield face down as a Forest land and as a 1/1 Saproling due to Life and Limb.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
  4. Repeat.
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Combo 2 with Proteus Machine

Also requires: Proteus Machine Proteus Machine
Results: Infinite death triggers · Infinite ETB · Infinite green mana · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Proteus Machine.
  2. Proteus Machine dies, triggering Yedora, returning Proteus Machine to the battlefield face down as a Forest land with no other types or abilities.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Proteus Machine's power.
  4. Activate Proteus Machine by tapping it, adding {G}.
  5. Activate Proteus Machine's morph ability by paying {0}, turning it face up.
  6. Repeat.

Combo 3 with Temur Charger

Also requires: Temur Charger Temur Charger
Results: Infinite death triggers · Infinite green mana · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Temur Charger.
  2. When Temur Charger dies, Yedora triggers, returning Temur Charger from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability.
  4. Activate Temur Charger by tapping it, adding {G}.
  5. Activate Temur Charger's morph ability by revealing a green card from your hand, turning Temur Charger face up.
  6. Temur Charger triggers, giving target creature trample until end of turn.
  7. Repeat.

Combo 4 with Living Lands

Also requires: Living Lands Living Lands
Results: Infinite death triggers · Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing another nontoken creature.
  2. When the creature dies, Yedora triggers, returning the creature from your graveyard to the battlefield face down as a Forest land and as a 1/1 creature due to Living Lands.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the creature's power.
  4. Repeat.

Combo 5 with Ambush Commander

Also requires: Ambush Commander Ambush Commander
Results: Infinite death triggers · Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing a nontoken Forest, which is a creature due to Ambush Commander.
  2. When the Forest dies, Yedora triggers, returning the Forest from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
  4. Repeat.

Combo 6 with Embodiment of Insight

Results: Infinite death triggers · Infinite ETB · Infinite green mana · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing a nontoken land creature.
  2. When the land creature dies, Yedora triggers, returning the card to the battlefield face down as a Forest land.
  3. When the Forest enters the battlefield, Embodiment of Insight triggers, causing the Forest to become a 3/3 Elemental creature with haste in addition to its other types.
  4. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to the sacrificed creature's power.
  5. Activate the Elemental by tapping it, adding {G}.
  6. Repeat.

Combo 7 with Nature's Revolt

Also requires: Nature's Revolt Nature's Revolt
Results: Infinite death triggers · Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing another nontoken creature.
  2. When the creature dies, Yedora triggers, returning the creature from your graveyard to the battlefield face down as a Forest land and as a 2/2 creature due to Nature's Revolt.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the creature's power.
  4. Repeat.

Combo 8 with Nervous Gardener

Also requires: Nervous Gardener Nervous Gardener
Results: Infinite death triggers · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill · Put all lands with a basic land type from your library into your hand
Show steps
  1. Activate Altar of Dementia by sacrificing Nervous Gardener.
  2. When Nervous Gardener dies, Yedora triggers, returning Nervous Gardener from your graveyard to the battlefield face-down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Nervous Gardener's power.
  4. Activate Nervous Gardener by tapping it, adding {G}.
  5. Activate Nervous Gardener's disguise ability by paying {G}, turning it face-up.
  6. Nervous Gardener triggers, causing you to search your library for a land with a basic land type and put it into your hand.
  7. Repeat.

Combo 9 with Zimone, Mystery Unraveler

Results: Infinite LTB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite green mana · Infinite landfall triggers
Show steps
  1. Activate Altar of Dementia by sacrificing another nontoken creature you control.
  2. When the creature dies, Yedora triggers, returning the creature from your graveyard to the battlefield face-down as a Forest land.
  3. When the creature enters the battlefield as a Forest land, Zimone triggers.
  4. Holding priority, activate the land by tapping it, adding {G}.
  5. Resolve the Zimone trigger, turning the creature face-up.
  6. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to the sacrificed creature's power.
  7. Repeat.

Combo 10 with Kin-Tree Warden

Also requires: Kin-Tree Warden Kin-Tree Warden
Results: Infinite death triggers · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Kin-Tree Warden.
  2. When Kin-Tree Warden dies, Yedora triggers, returning Kin-Tree Warden from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Kin-Tree Warden's power.
  4. Activate Kin-Tree Warden by tapping it, adding {G}.
  5. Activate Kin-Tree Warden's morph ability by paying {G}, turning it face up.
  6. Repeat.

Combo 11 with Branchsnap Lorian

Also requires: Branchsnap Lorian Branchsnap Lorian
Results: Infinite death triggers · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Branchsnap Lorian.
  2. When Branchsnap Lorian dies, Yedora triggers, returning Branchsnap Lorian from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Branchsnap Lorian's power.
  4. Activate Branchsnap Lorian by tapping it, adding {G}.
  5. Activate Branchsnap Lorian's morph ability by paying {G}, turning it face up.
  6. Repeat.

Combo 12 with Kamahl, Fist of Krosa

Results: Infinite death triggers · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate the Forest by tapping it, adding {G}.
  2. Activate Kamahl's first ability by paying {G}, causing the Forest to become a 1/1 creature until end of turn.
  3. Activate Altar of Dementia by sacrificing the Forest.
  4. When the Forest dies, Yedora triggers, returning the Forest land from your graveyard to the battlefield face down as a Forest land.
  5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the Forest's power.
  6. Repeat.

Combo 13 with Birchlore Rangers

Also requires: Birchlore Rangers Birchlore Rangers
Results: Infinite death triggers · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Birchlore Rangers.
  2. When Birchlore Rangers dies, Yedora triggers, returning Birchlore Rangers from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Birchlore Rangers's power.
  4. Activate Birchlore Rangers by tapping it, adding {G}.
  5. Activate Birchlore Rangers's morph ability by paying {G}, turning it face up.
  6. Repeat.

Combo 14 with Living Plane

Also requires: Living Plane Living Plane
Results: Infinite death triggers · Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing another nontoken creature.
  2. When the creature dies, Yedora triggers, returning the creature from your graveyard to the battlefield face down as a Forest land and as a 1/1 creature due to Living Plane.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the creature's power.
  4. Repeat.

Combo 15 with Ruthless Ripper

Also requires: Ruthless Ripper Ruthless Ripper
Results: Infinite death triggers · Infinite green mana · Infinite landfall triggers · Infinite lifeloss · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Ruthless Ripper.
  2. When Ruthless Ripper dies, Yedora triggers, returning Ruthless Ripper from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Ruthless Ripper's power.
  4. Activate Ruthless Ripper by tapping it, adding {G}.
  5. Activate Ruthless Ripper's morph ability by revealing a black card from your hand, turning it face up.
  6. When Ruthless Ripper is turned face up, it triggers, causing target player to lose 2 life.
  7. Repeat.

Combo 16 with Tatyova, Steward of Tides

Results: Infinite death triggers · Infinite green mana · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing a nontoken creature.
  2. The creature dies, triggering Yedora, returning the creature from your graveyard to the battlefield face down as a Forest land.
  3. The face-down Forest enters the battlefield, triggering Tatyova, causing the Forest to become a 3/3 Elemental with haste until end of turn.
  4. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to the sacrificed creature's power.
  5. Activate the Forest by tapping it, adding {G}.
  6. Repeat.

Combo 17 with Horde Ambusher

Also requires: Horde Ambusher Horde Ambusher
Results: Infinite death triggers · Infinite green mana · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Horde Ambusher.
  2. When Horde Ambusher dies, Yedora triggers, returning Horde Ambusher from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Horde Ambusher's power.
  4. Activate Horde Ambusher by tapping it, adding {G}.
  5. Activate Horde Ambusher's morph ability by revealing a red card from your hand, turning it face up.
  6. Repeat.

Combo 18 with Beifong's Bounty Hunters

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite green mana · Infinite landfall triggers
Show steps
  1. Activate Altar of Dementia by sacrificing the first additional creature.
  2. When the creature dies, Yedora and Beifong's Bounty Hunters trigger.
  3. Resolve the Beifong's Bounty Hunters trigger, earthbending a land.
  4. Resolve the Yedora trigger, returning the first creature from your graveyard to the battlefield face-down as a Forest.
  5. Resolve the Altar of Dementia ability.
  6. Activate Altar of Dementia by sacrificing the second creature.
  7. When the second creature dies, Yedora and Beifong's Bounty Hunters trigger.
  8. Resolve the Yedora trigger, returning the second creature from your graveyard to the battlefield face-down as a Forest.
  9. Resolve the Beifong's Bounty Hunters trigger, earthbending the first creature.
  10. Resolve the Altar of Dementia ability.
  11. Activate the first and second creature by tapping them, adding {G}{G}.
  12. Activate Altar of Dementia by sacrificing the first creature.
  13. When the creature dies, Yedora and Beifong's Bounty Hunters trigger.
  14. Resolve the Beifong's Bounty Hunters trigger, returning the creature from your graveyard to the battlefield.
  15. Resolve the Yedora trigger, doing nothing.
  16. Resolve the Altar of Dementia ability.
  17. Activate Altar of Dementia by sacrificing the first creature.
  18. When the creature dies, Yedora and Beifong's Bounty Hunters trigger.
  19. Resolve the Yedora trigger, returning the first creature from your graveyard to the battlefield face-down as a Forest land.
  20. Resolve the Beifong's Bounty Hunters trigger, earthbending the second creature.
  21. Resolve the Altar of Dementia ability.
  22. Activate Altar of Dementia by sacrificing the second creature.
  23. When the creature dies, Yedora and Beifong's Bounty Hunters trigger.
  24. Resolve the Beifong's Bounty Hunters trigger, returning the creature from your graveyard to the battlefield.
  25. Resolve the Yedora trigger, doing nothing.
  26. Resolve the Altar of Dementia ability.
  27. Repeat from step 6.

Combo 19 with Rattleclaw Mystic

Also requires: Rattleclaw Mystic Rattleclaw Mystic
Results: Infinite blue mana · Infinite death triggers · Infinite green mana · Infinite landfall triggers · Infinite LTB · Infinite mill · Infinite red mana · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Rattleclaw Mystic.
  2. When Rattleclaw Mystic dies, Yedora triggers, returning Rattleclaw Mystic from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Rattleclaw Mystic's power.
  4. Activate Rattleclaw Mystic's morph ability by paying {2}, turning it face up.
  5. Rattleclaw Mystic triggers, adding {G}{U}{R}.
  6. Repeat.

Combo 20 with Watcher of the Roost

Also requires: Watcher of the Roost Watcher of the Roost
Results: Infinite death triggers · Infinite green mana · Infinite landfall triggers · Infinite lifegain · Infinite lifegain triggers · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing Watcher of the Roost.
  2. When Watcher of the Roost dies, Yedora triggers, returning Watcher of the Roost from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Watcher of the Roost's power.
  4. Activate Watcher of the Roost by tapping it, adding {G}.
  5. Activate Watcher of the Roost's morph ability by revealing a white card from your hand, turning it face up.
  6. Watcher of the Roost triggers, causing you to gain 2 life.
  7. Repeat.
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