Progenitor mimic and persist/undying

[Bigums]

{progenitor mimic}
{strangleroot Geist}
{thragtusk}

If I were to play progenitor mimic and the spell resolved. I chose to copy strangleroot Geist and that also resolved.

I also have a thragtusk on the field.
(This is just an example. Of course I would've copied the thragtusk.)

It would essentially enter the battlefield with the undying ability. So lets say it dies in combat. Does it come back into play with a +1/+1 counter and the ability to chose a new copy (to copy thragtusk), does it stay dead, or does it come back as a strangleroot Geist again?

[Mentonin]

Progenitor comes back with +1/+1, and chooses a new copy. The tokens it creates every upkeep do not come back

[Bigums]

So it can't make tokens anymore after it comes back?

[RayZoh]

The tokens will continue being created every upkeep. What he means is that the tokens that have undying from copying {Strangleroot Geist} won't come back to play from undying as tokens disappear when placed in the graveyard.

[Birdbrain]

So it can't make tokens anymore after it comes back?

it can. The tokens can't

[NuclearChicken]

After It comes back can it then copy thragtusk? Then put out copy's of thragtusk?

[RayZoh]

Indeed. The tokens it generates will also gain the benefits of {Thragtusk}, the 5 life when the tokens come into play and a 3/3 token when they leave play.

[NuclearChicken]

Wow I need 4 progenitor mimics!! :O