Portal is the name given to the three Magic: The Gathering starter level sets. The original Portal was released on May 1, 1997, followed by Portal Second Age on June 24, 1998 and Portal Three Kingdoms on July 6, 1999.[1][2] The Portal set was inspired by Chinese mythology; Three Kingdoms in particular by the 14th century Chinese historical novel Romance of the Three Kingdoms by Luo Guanzhong.[3][4]
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