How can you create a combo with Teshar, Ancestor's Apostle, Codex Shredder, Extruder, Foundry Inspector, Myr Retriever?
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[START OF COMBO]This combo can be formed with Teshar, Ancestor's Apostle, Codex Shredder, Extruder, Foundry Inspector, Myr Retriever

Color identity: W
Mana cost: 
Steps:
  1. Cast Codex Shredder by paying {0}.
  2. Teshar triggers, returning Myr Retriever from your graveyard to the battlefield.
  3. Activate Codex Shredder by tapping it, causing target player to mill one card.
  4. Activate Extruder by sacrificing Codex Shredder, putting a +1/+1 counter on any target creature.
  5. Activate Extruder by sacrificing Myr Retriever, putting a +1/+1 counter on any target creature.
  6. Myr Retriever triggers, returning Codex Shredder from your graveyard to your hand.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mill
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Teshar, Ancestor's Apostle must be on the battlefield
  - Codex Shredder must be in your hand
  - Extruder must be on the battlefield
  - Foundry Inspector must be on the battlefield
  - Myr Retriever must be in the graveyard
[END OF COMBO PREREQUISITES]
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