Exile your library, Near-infinite damage
Activate Phyrexian Devourer by exiling the top card of your library, putting a number of +1/+1 counters on it equal to the exiled card's mana value.
Casey's second ability triggers, and Phyrexian Devourer triggers if it's power is 7 or greater.
Resolve the Casey trigger, dealing damage to an opponent.
Holding priority, repeat from step 1 until your library.
Resolve all Phyrexian Devourer triggers, sacrificing it.
Component Cards
How It Works
Activate Phyrexian Devourer by exiling the top card of your library, putting a number of +1/+1 counters on it equal to the exiled card's mana value.
Casey's second ability triggers, and Phyrexian Devourer triggers if it's power is 7 or greater.
Resolve the Casey trigger, dealing damage to an opponent.
Holding priority, repeat from step 1 until your library.
Resolve all Phyrexian Devourer triggers, sacrificing it.