Color Identity: R

Initial Card State
- Casey Jones and Phyrexian Devourer on the battlefield (Casey Jones without summoning sickness).
Easy Prerequisites
- Your deck size is at least 2.
Steps
- 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.
Results
- Exile your library.
- Near-infinite damage.
Bracket Tag
This combo has been estimated to be Ruthless (Bracket 4+).