How can you create a combo with Havengul Lich, Rooftop Storm, Warren Soultrader, Verdant Sun's Avatar?
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[START OF COMBO]This combo can be formed with Havengul Lich, Rooftop Storm, Warren Soultrader, Verdant Sun's Avatar

Color identity: BGU
Mana cost: {1}
Steps:
  1. Activate Havengul Lich by paying {1}, allowing you to cast a Zombie from your graveyard this turn.
  2. Cast the Zombie from your graveyard by paying {0} due to Rooftop Storm.
  3. When the Zombie enters the battlefield, Verdant Sun's Avatar triggers, causing you to gain life equal to the Zombie's toughness.
  4. Activate Warren Soultrader by paying 1 life and sacrificing the Zombie, creating a Treasure token.
  5. Activate the Treasure by tapping and sacrificing it, adding {1}.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite lifegain triggers
  - Infinite storm count
  - Infinite lifegain[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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