How can you create a combo with Woodfall Primus, Melira, Sylvok Outcast, Ashnod's Altar?
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[START OF COMBO]This combo can be formed with Woodfall Primus, Melira, Sylvok Outcast, Ashnod's Altar

Color identity: G
Mana cost: 
Steps:
  1. Activate Ashnod's Altar by sacrificing Woodfall Primus, adding {C}{C}.
  2. Woodfall Primus's persist ability triggers, returning it to the battlefield.
  3. Woodfall Primus enters the battlefield, triggering its ability.
  4. Holding priority, repeat an arbitrarily large number of times.
  5. Resolve all Woodfall Primus abilities, destroying any number of noncreature permanents.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Destroy any number of noncreature permanents
  - Infinite colorless mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Woodfall Primus does not have a -1/-1 counters on it.
[END OF COMBO PREREQUISITES]
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