If I catch something like a Celesteela or Kartana via the Ultra Warp Ride, can I catch another one?

Question

I'm gonna wait for catching them because otherwise I lost a Pokemon that I would want to Shiny hunt.

Answer 1

You can catch as many of every Ultra beast that was in the original sun and Moon as you want.

Comments

Also Inf. Blacephalon And Stakataka (depends on which version you have)