Question raised at the 2007 EC:
> If I have a vampire with the Regent card and someone else brings out
> Sha-Ennu (who has the regent title), can other Sabbat vampire still rush
> my regent via the regent card's built-in action?
No. The regent card is a title card. It is out of play while the title is
contested. (Similar to the way capacity-increasing praxes are handled.)