How can you create a combo with Yedora, Grave Gardener, Proteus Machine, Altar of Dementia?
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[START OF COMBO]This combo can be formed with Yedora, Grave Gardener, Proteus Machine, Altar of Dementia

Color identity: G
Mana cost: 
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.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite green mana
  - Infinite landfall triggers
  - Infinite leaves the battlefield
  - Infinite mill
  - Infinite sacrifice triggers
  - Infinite self-mill[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant