Resources

Magic: The Gathering Comprehensive Rules Changes

Core Set - Ninth Edition to Ravnica: City of Guilds (Single Change View)

General changes

Old rule (Core Set - Ninth Edition) New rule (Ravnica: City of Guilds)

207.3.

A guild icon appears in the text box of many Ravnica (tm) block cards. These cards either have the specified guild's exclusive mechanic or somehow relate to the two colors associated with that guild. Guild icons have no effect on game play.