Great Whale, Journey to Eternity // Atzal, Cave of Eternity, and Diamond Valley

Prerequisites

• Great Whale on the battlefield
• Journey to Eternity // Atzal, Cave of Eternity on the battlefield
• Diamond Valley on the battlefield
• Lands you control can tap to produce

Steps

1. Activate Diamond Valley by tapping it and sacrificing Great Whale, gaining you 5 life
2. Activate Atzal's second ability by paying and tapping it, returning Great Whale to the battlefield
3. Great Whale enters the battlefield, untapping Atzal, Diamond Valley, and five other lands that can produce
4. Repeat

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB