Hidden Haven wrote:Playable on a non-Dragon's lair Ruins & Lairs in a Wilderness , Border-land , or Shadow-land ; the site must normally be a Ruins & Lairs . The site becomes one of your Wizardhavens [W] and loses all automatic-attacks. Nothing is considered playable as written on the site card. If one of you companies is at this site, all attacks against it are canceled. Other Fallen-wizards may not use this site as a Wizardhaven [W]. Discard this card when the site is discarded or returned to its location deck. It cannot be discarded otherwise.
Underline mine.CRF, Rulings by Term, Site" wrote:A permanent-event played on a site affects only the copy of the site it is played on,
unless otherwise specified. A permanent-event not played on a site affects all versions
of affected sites.
So: "Other Fallen-wizards may not use this site as a Wizardhaven [W]" does not prevent other Fallen-wizards from using their versions of this site as a Wizardhaven [W].
I propose the following erratum:
Hidden Haven wrote:Playable on a non-Dragon's lair Ruins & Lairs in a Wilderness , Border-land , or Shadow-land ; the site must normally be a Ruins & Lairs . The site becomes one of your Wizardhavens [W] and loses all automatic-attacks. Nothing is considered playable as written on the site card. If one of you companies is at this site, all attacks against it are canceled. Other Fallen-wizards may not use any version of this site as a Wizardhaven [W]. Discard this card when the site is discarded or returned to its location deck. It cannot be discarded otherwise.