Beacon of Immortality, Bolas's Citadel, and Phyrexian Devourer

Prerequisites

• Beacon of Immortality in hand
• Bolas's Citadel on the battlefield
• Phyrexian Devourer on the battlefield
• available

Steps

1. Activate Phyrexian Devourer by exiling a card
2. Repeat step 1 until you have an empty library
3. Cast Beacon of Immortality by paying , doubling your life total and shuffling it into your library
4. Cast Beacon of Immortality from the top of your library by paying 6 life, doubling your life total and shuffling it into your library
5. Repeat step 4

Results

• Exile your library
• Infinite lifegain
• Infinite lifegain triggers
• Infinite magecraft triggers
• Infinite storm count