Beledros Witherbloom + Urza's Saga + Agatha's Soul Cauldron + Arwen, Weaver of Hope + Trostani, Selesnya's Voice

Prerequisites

• 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. 1Activate any number of lands except Urza's Saga by tapping them, adding at least .
2. 2Activate 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. 3When the Construct enters the battlefield, Trostani triggers, causing you to gain at least 10 life.
4. 4Activate the Construct using Beledros Witherbloom's ability by paying 10 life, untapping all lands you control.
5. 5Repeat.
6. 6If other lands you control can tap to produce at least , this combo nets infinite mana.

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature tokens
• Infinite lifegain
• Infinite lifegain triggers
• Infinite mana lands you control can produce
• Infinite power and toughness for certain creatures
• Infinite untap of lands you control