Jarad, Golgari Lich Lord, Cosmogoyf, and Phyrexian Devourer

Prerequisites

• Jarad, Golgari Lich Lord on the battlefield
• Cosmogoyf on the battlefield
• Phyrexian Devourer on the battlefield
• available

Steps

1. Activate Phyrexian Devourer by exiling the top card of your library
2. Repeat step 1 until your library is empty or the number of cards you own in exile is equal to or greater than each opponent's life total
3. Activate Jarad by paying and sacrificing Cosmogoyf, causing each opponent to lose life equal to Cosmogoyf's power
4. Activate Phyrexian Devourer's second ability by exiling the top card of your library, causing you to put a number of +1/+1 counters on Phyrexian Devourer equal to that card's mana value
5. Repeat step 1 until Phyrexian Devourer's power is greater than each opponent's life total
6. Phyrexian Devourer's first ability triggers
7. Holding priority, activate Jarad by paying and sacrificing Phyrexian Devourer, causing each opponent to lose life equal to Phyrexian Devourer's power

Results

• Near-infinite damage
• Near-infinite lifeloss
• Exile your library