How can you create a combo with Horde of Notions, Avenger of Zendikar, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Horde of Notions, Avenger of Zendikar, Phyrexian Altar

Color identity: WUBRG
Mana cost: {5}{G}{G}
Steps:
  1. Cast Avenger of Zendikar by paying {5}{G}{G}.
  2. Avenger of Zendikar enters the battlefield, triggering itself, creating at least five 0/1 Plant creature tokens.
  3. Activate Phyreixan Altar five times by sacrificing Avenger of Zendikar and four Plant tokens, adding {W}{U}{B}{R}{G}.
  4. Activate Horde of Notions by paying {W}{U}{B}{R}{G}, casting Avenger of Zendikar from your graveyard without paying its mana cost.
  5. Repeat from step 2.
  6. Once you have infinite creature tokens, you may activate Phyrexian Altar any number of times.[END OF COMBO STEPS]

Result:
  - Infinite casts of Elemental cards from your graveyard
  - Infinite colored mana
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Horde of Notions must be on the battlefield
  - Avenger of Zendikar must be in your hand
  - Phyrexian Altar must be on the battlefield
  - You control at least five lands.
[END OF COMBO PREREQUISITES]
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