Scytheclaw Raptor activate his ability when tokens creatures enter into play [Investigating]

Keyler

Scytheclaw Raptor text says: "when an opponent cast or copies a creature... lose x life", tokens creatures entering into play does not count between those options. I played a tainted adversay when opponent has scytheclaw on board and each time a new zombie enters into play I took 2 damage so I think is not working as designed.