How can you create a combo with Barrin, Master Wizard, Myr Battlesphere, Ashnod's Altar, Gandalf the White?
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[START OF COMBO]This combo can be formed with Barrin, Master Wizard, Myr Battlesphere, Ashnod's Altar, Gandalf the White

Color identity: WU
Mana cost: {7}
Steps:
  1. Cast Myr Battlesphere by paying {7}.
  2. When Myr Battlesphere enters the battlefield, it triggers twice, creating eight 1/1 Myr artifact creature tokens.
  3. Activate Ashnod's Altar five times by sacrificing five Myrs, adding ten {C}.
  4. Activate Barrin by paying {2} and sacrificing a Myr, returning Myr Battlesphere to your hand from the battlefield.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite creature tokens
  - 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:
  - Barrin, Master Wizard must be on the battlefield
  - Myr Battlesphere must be in your hand
  - Ashnod's Altar must be on the battlefield
  - Gandalf the White must be on the battlefield
[END OF COMBO PREREQUISITES]
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