446.1. Copying a Game Object is the act of adding or replacing some or all of the copyable traits of another Game Object with those of the Copied Game Object.
446.2. Copy Effects are rendered in the Copy Effects layer. See rule 475. Layers for more information.
446.3. Some Game Objects may be created as a Copy of another Game Object. This is not a Copy Effect. The Copy in such a case is rendered with the same copyable traits as those of the Game Object it is a Copy of. It has no printed traits of its own that are subsequently replaced. Example: Zilean, Time Mage is a unit that reads "Once each turn, if you would play a token unit while I'm at a battlefield, you may play that token and an additional copy of it instead." The additional copy played by Zilean's replacement effect has no printed traits of its own. Its printed traits are those of the token it is a copy of.