Can I play Endless Interrogation three times after i succeeded at a story if i have three undrained domains?

1 response per 1 trigger.

So, 3 times from succeding at ONE story - I would say no.

If you succeeded at three stories, yes, otherwise, no.

Ah ok, thanks. Otherwise it would be too powerfull i guess.

A lot of cards would be too powerful if you could repeatedly activate them off one trigger that way.

Actually, you can.

Once the card returns back to your hand playing it again would really act like you played a whole different card. Multiple different responses can be used off of a similiar trigger provided that it comes from a different source.

In fact when I was talking with the Pastore's the day before the championship we brought this up to both Nate French and Jim Black and they confirmed that since its the same as playing a new card from your hand you can get some extra mileage out of your Endless Interrogation. This is of course not to be confused with playing something that sticks around like Aspiring Artist allowing you to draw you whole deck out as your not playing a whole new card off of a the same trigger.

Hrm. Quite interesting.

Yep, what Magnus said. We did get this clarified from Nate and Jim.