If you would like to see the deck in action, the official Magic the Gathering YouTube channel will have the footage from the event up early this week with good commentary about how the deck functions and operates.
What I want to focus our discussion on is the overall Metagame for Pro Tour Phyrexia.
As you see in this breakdown, Rakdos Midrange made up 15.1% of the field for the event followed by Mono-Green Devotion at 13.8%, Gruul Vehicles at 9.6%, Lotus Field Combo at 7.8%, Mono-White Humans at 6.9%, and Azorious Control and Izzet Creativity at 6.4. What this says about Pioneer as a format is significant. There is not one dominant deck in the format, so players can choose a deck that suits their own play style and have a reasonable chance to win.
For today’s deck tech, I will look at the top deck in the event: Rakdos Midrange. The below link will take you to my deck tech on Rakdos Midrange and the game footage will show you how the deck functions. The version in the Deck Tech is by Javier Dominguez from Pro Tour Phyrexia. This version had the second most points of all the Rakdos Midrange decks in the event.
RAKDOS MIDRANGE, by Javier Dominguez for Pro Tour Phyrexia