How can you create a combo with Barrin, Master Wizard, Master of Waves, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Barrin, Master Wizard, Master of Waves, Phyrexian Altar

Color identity: U
Mana cost: {3}{U}
Steps:
  1. Cast Master of Waves by paying {3}{U}.
  2. Master of Waves enters the battlefield, creating at least eight 1/0 Elemental creature tokens.
  3. Activate Phyrexian Altar by sacrificing seven Elemental tokens, adding {6}{U}.
  4. Activate Barrin by paying {2} and sacrificing an Elemental token, returning Master of Waves from the battlefield to your hand.
  5. Any remaining 1/0 Elemental creature tokens you control die as a state-based action due to having zero toughness.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - 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
  - Master of Waves must be in your hand
  - Phyrexian Altar must be on the battlefield
  - Your devotion to blue is at least seven.
[END OF COMBO PREREQUISITES]
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