How can you create a combo with Changeling Titan, Karmic Guide, Ashnod's Altar?
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[START OF COMBO]This combo can be formed with Changeling Titan, Karmic Guide, Ashnod's Altar

Color identity: GW
Mana cost: {4}{G}
Steps:
  1. Cast Changeling Titan by paying {4}{G}.
  2. Changeling Titan enters the battlefield, championing Karmic Guide.
  3. Activate Ashnod's Altar by sacrificing Changeling Titan, adding {C}{C}.
  4. Changeling Titan dies, causing Karmic Guide to return to the battlefield from exile.
  5. Karmic Guide enters the battlefield, returning Changeling Titan from your graveyard to the battlefield.
  6. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - 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:
  - Changeling Titan must be in your hand
  - Karmic Guide must be on the battlefield
  - Ashnod's Altar must be on the battlefield
[END OF COMBO PREREQUISITES]
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