How can you create a combo with Evolution Witness, Star Pupil, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Evolution Witness, Star Pupil, Phyrexian Altar

Color identity: GW
Mana cost: {W}
Steps:
  1. Cast Star Pupil by paying {W}, causing it to enter the battlefield with a +1/+1 counter on it.
  2. Activate Phyrexian Altar by sacrificing Star Pupil, adding {W}.
  3. When Star Pupil dies, it triggers, putting a +1/+1 counter on Evolution Witness.
  4. Evolution Witness triggers, returning Star Pupil from your graveyard to your hand.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters on Evolution Witness
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Evolution Witness must be on the battlefield
  - Star Pupil must be in your hand
  - Phyrexian Altar must be on the battlefield
[END OF COMBO PREREQUISITES]
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