200 Gems or 
5500 Favor
100 Gems or 9500 Favor
400 Gems
Acquired by purchasing the SWC Digital Ticket.
Acquired: Nepal Earthquake Relief Chest or by purchasing the Founder's Pack for Xbox One (linking your Xbox One acc w/ Founder's Pack with your PC acc unlocks the skin for PC as well).
200 Gems or 9500 Favor at God Mastery 1
300 Gems or 12500 Favor at God Mastery 5
400 Gems or 15000 Favor at God Mastery 10