Magic: the Gathering via Heroes of Might & Magic hybrid, Magic: the Gathering - Tactics, will be shut down on the 28th March 2014.
The studio announced, "Today we are announcing with our partner, Wizards of the Coast, that we will discontinue game services for Magic: The Gathering – Tactics on March 28, 2014. We are honored to have been a part of bringing you the magic of the Multiverse over the last few years. It has been a fun and memorable journey, and we thank you for all of your dedication and support."
Card pack sales will discontinue on the 18th November, 2013. As for fans maintaining their own servers? "Sony Online Entertainment will retain all of the code and data from Magic: The Gathering – Tactics. Sony Online Entertainment will not license or authorize the operation of a Magic: The Gathering – Tactics emulator or fan operated Magic: The Gathering – Tactics server," pronounced the company.
Magic: the Gathering - Tactics launched back on the 18th January 2011 for PC and PlayStation 3.