Duel Decks: Phyrexia vs. The Coalition is the fifth set in the Duel Decks series. It was released on March 19, 2010, with an MSRP of US$19.99.
Phyrexia vs. The Coalition contains two preconstructed theme decks, one centered around the forces of Phyrexia and the other around the combined forces of the Coalition. Phyrexia vs. The Coalition is a flavor-based theme deck.