Scars of Mirrodin
Scars of Mirrodin is a Magic: The Gathering block, consisting of the expansion sets Scars of Mirrodin (October 1, 2010), Mirrodin Besieged (February 4, 2011) and New Phyrexia. This block marked the return to the plane of Mirrodin. This plane was last visited in the Mirrodin block that concluded in 2004. The interim tagline for the set was "The Corrosion Begins October 1, 2010." The plans for this set were first made public by mananation.com when it was discovered that "Scars of Mirrodin", as well as "Mirrodin Pure" and "New Phyrexia" had been registered as trademarks with the US Patent and Trademark Office by Wizards of the Coast. As with the original Mirrodin block, artifacts make up the overarching theme of Scars of Mirrodin; Nearly half of all cards in the set are artifacts. In his May 24 column, Mark Rosewater confirmed that the "Infect" game mechanic in Scars of Mirrodin would bring poison counters back to Magic. All cards (other than basic lands) in the Scars of Mirrodin block carried a watermark, either Mirran or Phyrexian. Storyline The origins of New Phyrexia date back to the early design stages of the original Mirrodin set. The idea of Phyrexian oil