How can you create a combo with Halana, Kessig Ranger, Ashnod's Altar, Overgrown Armasaur?
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[START OF COMBO]This combo can be formed with Halana, Kessig Ranger, Ashnod's Altar, Overgrown Armasaur

Color identity: G
Mana cost: {2}
Steps:
  1. Give Overgrown Armasaur indestructible, if needed.
  2. Cause a creature to enter the battlefield under your control.
  3. Halana triggers, causing you to pay {2} to have that creature deal damage equal to its power to Overgrown Armasaur.
  4. Overgrown Armasaur triggers, causing you to create a 1/1 Saproling creature token.
  5. When the Saproling enters the battlefield, Halana triggers.
  6. Holding priority, activate Ashnod's Altar by sacrificing the Saproling, adding {C}{C}.
  7. Resolve the Halana trigger, causing you to pay {2} to deal 1 damage to Overgrown Armasaur.
  8. Repeat from step 4.[END OF COMBO STEPS]

Result:
  - 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
  - You have a way to cause a creature to enter the battlefield under your control.
  - You have a way to give Overgrown Armasaur indestructible.
[END OF COMBO PREREQUISITES]
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