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.)
Near Mint Foil - £1.40
Lightly Played Foil - £1.20
Moderately Played Foil - £1.00
Heavily Played Foil - £0.70
Damaged Foil - £0.40
Near Mint Foil Non English - £1.40
Lightly Played Foil Non English - £1.20
Moderately Played Foil Non English - £1.00
Heavily Played Foil Non English - £0.70
Damaged Foil Non English - £0.40