Liliana, Untouched by Death, Gray Merchant of Asphodel, Rooftop Storm, and Warren Soultrader

Prerequisites

• Liliana, Untouched by Death on the battlefield
• Gray Merchant of Asphodel in the graveyard
• Rooftop Storm on the battlefield
• Warren Soultrader on the battlefield
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Steps

1. Activate Liliana's third loyalty ability by removing three loyalty counters from it, allowing you to cast Zombie spells from your graveyard this turn
2. Cast Gray Merchant from your graveyard by paying due to Rooftop Storm
3. When Gray Merchant enters the battlefield, it triggers, causing each opponent to lose life equal to your devotion to black and causing you to gain that much life
4. Activate Warren Soultrader by paying 1 life and sacrificing Gray Merchant, creating a Treasure token
5. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers
• Infinite lifegain
• Infinite storm count
• Infinite lifeloss
• Infinite Treasure tokens