How can you create a combo with Hedge Shredder, Mortuary, Dryad Arbor, Altar of Dementia?
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[START OF COMBO]This combo can be formed with Hedge Shredder, Mortuary, Dryad Arbor, Altar of Dementia

Color identity: BG
Mana cost: 
Steps:
  1. Activate Altar of Dementia by sacrificing Dryad Arbor.
  2. When Dryad Arbor dies, Mortuary triggers, putting Dryad Arbor from your graveyard onto the top of your library.
  3. Resolve the Altar of Dementia ability, causing you to mill Dryad Arbor.
  4. Hedge Shredder's second ability triggers, returning Dryad Arbor from your graveyard to the battlefield tapped.
  5. Repeat.[END OF COMBO STEPS]

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

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