NameCards can be obtained via Item Shop or Reward Crates (ZM). Players can own multiple NameCards at the same time, but only one of them will be in use. Obtaining a NameCard automatically set it to "In use" state.
All NameCards are temporary and players must keep renewing them (If bought from Item Shop) to continue using them. Certain special type may be permanent, depends on publisher's choice. The NameCards from Ranked Match's reward are permanently.
Some NameCards are in limited edition and may be available only during in certain time of the year, such as Euro, World Cup, WEM, WCG, etc...