How can you create a combo with Gravecrawler, Ashnod's Altar, Anax, Hardened in the Forge, Gemstone Array?
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[START OF COMBO]This combo can be formed with Gravecrawler, Ashnod's Altar, Anax, Hardened in the Forge, Gemstone Array

Color identity: BR
Mana cost: 
Steps:
  1. Activate Ashnod's Altar by sacrificing Gravecrawler, adding {C}{C}.
  2. Anax triggers, creating a 1/1 Satyr creature token.
  3. Activate Gemstone Array by paying {2}, putting a charge counter on it.
  4. Activate Gemstone Array by removing a charge counter, adding {B}.
  5. Cast Gravecrawler from your graveyard by paying {B}.
  6. Repeat any number of times.
  7. Activate Ashnod's Altar any number of times by sacrificing any number of Satyr tokens, adding any amount of colorless mana.
  8. Activate Gemstone Array any number of times by paying any amount of colorless mana, adding any number of charge counters.
  9. Activate Gemstone Array any number of times by removing any number of charge counters, adding any amount of colored mana.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite lifeloss
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count
  - Infinite colorless mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control an additional Zombie.
[END OF COMBO PREREQUISITES]
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