Mirrodin Bisieged Información y primeras cartas

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 Mike Turian
Development Team	Erik Lauer (lead) Ryan Dhuse Tom LaPille Mike Turian