As a sorcery, you may pay the mana cost of a locked door to unlock it.) 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
Im personally looking forward to trying this card in my Celestine, the Living Saint deck because its not that easy to put cards into the graveyard in mono-white without milling yourself
Pikachu cards always carry a built-in premium that transcends competitive viability, set design, or era-specific collecting trends
Even better, the small, concise bits of art in the center also remind me of the images on the bottoms of the yellowed pages of my old Fighting Fantasy books, which is how you played D&D by yourself before video games
In each player's upkeep, this gets a +1/+1 counter and haste and moves to that player's control