Quote from: lochleinn on December 30, 2018, 08:03:52 PMYou cannot. EDH has specific restrictions regarding how to build the deck, and those restrictions cannot be overcome. However, any EDH deck with a black color identity may run as many of them as you wish.
So, can someone run Rat Colony in a deck that doesn't have a black color identity?
Since a ruling says you CAN run more than one because of its rules text, does that also apply to running it in a different color deck?
