Set Name: Mirrodin Besieged
Block: Set 2 of 3 in the Scars of Mirrodin block
Three-Letter Abbreviation: MBS
Number of Cards: 155
Release Date: February 4, 2011
Prerelease Events: January 29-30, 2011
Launch Parties: February 4-7, 2011
Design Team: Mark Gottlieb (lead), Gregory Marques, Ken Nagle, Mark Rosewater and Mike Turian.
Development Team: Erik Lauer (lead), Ryan Dhuse, Tom LaPille and Mike Turian .
Bruno Schepers Melo