Verdant Sun's Avatar, Defiler of Faith, Whitemane Lion, and Ashnod's Altar

Prerequisites

• Verdant Sun's Avatar on the battlefield
• Defiler of Faith on the battlefield
• Whitemane Lion in hand
• Ashnod's Altar on the battlefield
• available

Steps

1. Cast Whitemane Lion by paying and either or two life
2. Defiler of Faith triggers, creating a 1/1 Soldier creature token
3. The Soldier enters the battlefield, triggering Verdant Sun's Avatar, causing you to gain 1 life
4. Resolve Whitemane Lion, causing it to enter the battlefield, triggering itself and Verdant Sun's Avatar
5. Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand
6. Resolve the Verdant Sun's Avatar trigger, causing you to gain two life
7. Activate Ashnod's Altar by sacrificing the Spirit token, adding
8. Repeat

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count