Trudge Garden, Ashnod's Altar, and Soul Warden

Prerequisites

• Trudge Garden on the battlefield
• Ashnod's Altar on the battlefield
• Soul Warden on the battlefield
• You have a way to gain life
• available

Steps

1. Gain any amount of life
2. Trudge Garden triggers, causing you to pay to create a 4/4 Fungus Beast creature token
3. The Fungus Beast enters the battlefield, triggering Soul Warden
4. Holding priority, activate Ashnod's Altar by sacrificing the Fungus Beast, adding
5. Resolve the Soul Warden trigger, causing you to gain 1 life
6. Repeat from step 2

Results

• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite sacrifice triggers