Phyrexian Devourer, and Assault Suit

Prerequisites

• Phyrexian Devourer on the battlefield
• Assault Suit on the battlefield
• Assault Suit attached to Phyrexian Devourer

Steps

1. 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
2. Repeat step 1 until Phyrexian Devourer's power is seven or greater
3. Phyrexian Devourer's first ability triggers, causing you to not sacrifice Phyrexian Devourer due to Assault Suit
4. Phyrexian Devourer's first ability triggers again, causing a mandatory infinite loop, ending the game in a draw

Results

• Draw the game