I heard something about having to choose a faction for mirrodin besieged? are you allowed to use cards from both factions together or do u need to choose only one faction for your deck?
I heard something about having to choose a faction for mirrodin besieged? are you allowed to use cards from both factions together or do u need to choose only one faction for your deck?
You can mix and match as you want.
The "choose a faction" thing only applies at the prerelease, where you choose either Mirran or Phyrexian, and the Mirrodin Besieged packs you get will contain only cards from your chosen faction.
Fluttershy is best pony.