Beledros Witherbloom, Urza's Saga, Agatha's Soul Cauldron, Arwen, Weaver of Hope, and Verdant Sun's Avatar

Prerequisites

• Beledros Witherbloom in exile
• Urza's Saga on the battlefield
• Agatha's Soul Cauldron on the battlefield
• Arwen, Weaver of Hope on the battlefield
• Verdant Sun's Avatar on the battlefield
• Urza's Saga has two lore counters on it
• Lands you control except Urza's Saga can tap to produce at least
• The number of artifacts you control plus Arwen's toughness is equal to or greater than 9

Steps

1. Activate any number of lands except Urza's Saga by tapping them, adding at least
2. Activate Urza's Saga's second ability by paying and tapping it, creating a 0/0 Construct artifact creature token that gets +1/+1 for each artifact you control, and that enters the battlefield with a number of +1/+1 counters equal to Arwen's toughness
3. When the Construct enters the battlefield, Verdant Sun's Avatar triggers, causing you to gain at least 10 life
4. Activate the Construct using Beledros Witherbloom's ability by paying 10 life, untapping all lands you control
5. Repeat
6. If other lands you control can tap to produce at least , this combo nets infinite mana

Results

• Infinite creature tokens
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinitely large Construct tokens
• Infinite mana lands you control can produce
• Infinite untap of lands you control