When you unlock this door, search your library for a Room card that doesn't have the same name as a Room you control, reveal it, put it into your hand, then shuffle.
(You may card either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)
NM-Mint Foil - $1.40
Lightly Played Foil - $1.30
Moderately Played Foil - $1.10
Heavily Played Foil - $1.00
Damaged Foil - $0.70
NM-Mint Foil Non English - $1.40
Lightly Played Foil Non English - $1.30
Moderately Played Foil Non English - $1.10
Heavily Played Foil Non English - $1.00
Damaged Foil Non English - $0.70