Ghave, Guru of Spores, Warren Soultrader, and Carmen, Cruel Skymarcher

Prerequisites

• Ghave, Guru of Spores on the battlefield
• Warren Soultrader on the battlefield
• Carmen, Cruel Skymarcher on the battlefield
• You control at least one additional creature
• Your life total is at least 2

Steps

1. Activate Warren Soultrader by paying 1 life and sacrificing another creature
2. Carmen's first ability triggers, putting a +1/+1 counter on it and causing you to gain 1 life
3. Resolve the Warren Soultrader ability, creating a Treasure token
4. Activate the Treasure by tapping and sacrificing it, adding
5. Activate Ghave's first ability by paying and removing a +1/+1 counter from Carmen, creating a 1/1 Saproling creature token
6. Repeat

Results

• Infinite death triggers
• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite lifegain triggers
• Infinite lifegain
• Infinite +1/+1 counters on Carmen