If you have a Phyrexian Metamorph in play, copying Polyraptor, and you deal damage to the metamorph, it's enrage ability triggers and you get a token. Is that token an artifact? This came up in an EDH game today
The tokens created by the Phyrex-raptor will also be artifacts. Rule 706.9c: Some copy effects modify a characteristic as part of the copying process. The final value(s) for that characteristic becomes part of the copiable values for the copy.
When Phyrexian Metamorph copies something it adds the artifact subtype to what it copied, which is now part of its own copiable characteristics. So any copies made of the Phyrex-raptor, either by its Enrage ability or by any other Clones, will have the same characteristics, which includes being an artifact.
Rule 706.9c: Some copy effects modify a characteristic as part of the copying process. The final value(s) for that characteristic becomes part of the copiable values for the copy.
When Phyrexian Metamorph copies something it adds the artifact subtype to what it copied, which is now part of its own copiable characteristics. So any copies made of the Phyrex-raptor, either by its Enrage ability or by any other Clones, will have the same characteristics, which includes being an artifact.
Hope that helps.