How can you create a combo with Athreos, Shroud-Veiled, Enduring Bondwarden, Ashnod's Altar?
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[START OF COMBO]This combo can be formed with Athreos, Shroud-Veiled, Enduring Bondwarden, Ashnod's Altar

Color identity: WB
Mana cost: 
Steps:
  1. Activate Ashnod's Altar by sacrificing Enduring Bondwarden, adding {C}{C}.
  2. When Enduring Bondwarden dies, it and Athreos' third ability trigger.
  3. Resolve the Enduring Bondwarden trigger, putting all counters from it onto another nontoken creature you control.
  4. Resolve the Athreos trigger, returning Enduring Bondwarden from your graveyard to the battlefield.
  5. When Enduring Bondwarden enters the battlefield, its backup ability triggers, putting a +1/+1 counter on the creature who had a coin counter placed on it, and giving it the printed ability until end of turn.
  6. Activate Ashnod's Altar by sacrificing the nontoken creature with a coin counter on it, adding {C}{C}.
  7. When the creature dies, it and Athreos' third ability trigger.
  8. Resolve the creature's trigger, putting all counters from it onto Enduring Bondwarden .
  9. Resolve the Athreos trigger, returning the creature from your graveyard to the battlefield.
  10. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters on target creature you control
  - 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
  - You control at least one other nontoken creature.
  - Enduring Bondwarden has at least one coin counter on it.
[END OF COMBO PREREQUISITES]
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