I don't have any art for them, and I didn't think to long about them so they're lretty unbalanced and need balancing, also idk if I should have added any other flairs, but there will be a lot of spoilers in the details of how the rooms work and what secrets they have. Tbh they aren't very good rooms, but they do sound fun to play with.
Most of these rooms have 1 thing in common, floorplans as a resource.
The Amalgamizer
Color: Blueprint, Blackprint
Type: all of them
Effect: This room is every type of room.
Combine floorplans Cost: 5 gems
Has 1 door for every prismatic room (does not have to be already drafted)
Secrets: If the prism key is used on any of its doors, it reveals a staircase up to a third north entrance lever, where there is also a lever to make the room a power source. If you are unabble to continue drafting and have no prismatic rooms, it can be drafted outside, even if ybou don't have the floorplan, but its rarity is rare and requires having drafted all the regular 8 outside rooms before. If it is drafted outside (with the floorplan, without the floorplan, or using the monk's blessing) it will replace the lever for power with the floorplan of itself, the staircase up will be there, but with a door only openable by the prism key.
Fusing: aquarium + workshop + mechanarium + the prism key
The Hardware Store
Color: Blackprint, Shop
Type: Outer room
Effect: Buy and sell floorplans with allowance tokens. It randomly generates requirements and sell prices for when selling a floorplan, it then gives you three options you can only sell once per draft and/or reroll, if the requirements don't fit any floorplan, nor if you remove 1 of any of the requirements, then it allows you to sell any floorplan and get a fixed amount for that specific floorplan. It picks 3 random floorplans that have already been drafted before for you to buy. The inkwell, dice and the study all allow both sells and buys to be rerolled.
Fusing: Trading Post + Repellent Spray
Cursed Laundromat
Color: Red, Shop, Dead-end
Rarity: Rare
Effect: If you have less than 4 red rooms, lose all your special items. 8 special items are up for sale, including permanent floorplans for floorplanless rooms (Secret Garden, Room 8, Morning Room) and Classrooms, up for sale for quarter price of other shops (floorplans cost coins, unlike the hardware store).
Secrets: If next to Lavatory, 4 random of the items/floorplans will show up for free in the lavatory the next time its drafted. For every classroom you draft past the final exam, increase your allowance by 5 Fusion: Laundry room + Lost and found + the cursed effige/deadly stone
The Serious Room
Color: Red
Type: Dead end
Effect: Lose 1 of every resource (key, coin, dice, gem and step) for every room already drafted, gaurantee a red room every draw, lose 1 star for every time you've drafted The Serious Room, and make dead ends twice as common. But, if you draft all the red rooms you have, gain 100 of every resource, 50 stars, and add 50 coins to your allowance. Secrets: When shielded, gain all the collected coins as allowance. Fusion: Conference Room + Lavatory + Chappel
The Dungeons
Color: Blackprint
Type: Drafting, Outside
Effect: Lose 10 steps and spread 3 allowance tokens in The Dungeon, each time you draft a Blackprint Secrets: The same as the tomb Upgraded from the tomb
The Elevator
Color: Red Room
Type: Mechanical, Multi-story
Effect: For each elevator press, gain a star for every multi-story room (clock tower, library, attic, chamber of mirrors) in the estate and grounds, but lose a random tile of the estate for today and tommorow. Fusion: Rotanda + Observatory
The Chess Room
Color: Blueprint
Type: Drafting, Dead-end Cost: 5 gems Rarity: Unusual
Effect: Make a combination of 3 rooms to go together, the next time you draft any of those rooms all the other rooms are connected at no cost if possible, otherwise it will switch the position of two random rooms. Secrets: Has a random chess piece Fusion: Conservatory + Ornate Compass
The Pasture:
Color: Green Room
Type: Drafting, Spread
Effect: Adds a lavatory to the draft pool today for every 5 Kennels you've ever drafted, and unseals an ante chamber door for every lavatory drafted today. Fusion: Cloister + kennel