How can you create a combo with Reincarnation, Dualcaster Mage, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Reincarnation, Dualcaster Mage, Phyrexian Altar

Color identity: RG
Mana cost: {2}{R}{R}{G}{G}
Steps:
  1. Cast Reincarnation by paying {1}{G}{G}, targeting any creature.
  2. Holding priority, cast Dualcaster Mage by paying {1}{R}{R}.
  3. Dualcaster Mage enters the battlefield, copying Reincarnation, targeting Dualcaster Mage.
  4. Resolve the copy of Reincarnation.
  5. Activate Phyrexian Altar by sacrificing Dualcaster Mage, adding one mana of any color.
  6. Dualcaster Mage dies, triggering Reincarnation, returning Dualcaster Mage from your graveyard to the battlefield.
  7. Repeat from step 3.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite magecraft triggers
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Reincarnation must be in your hand
  - Dualcaster Mage must be in your hand
  - Phyrexian Altar must be on the battlefield
[END OF COMBO PREREQUISITES]
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