Hogwarts: Room of Requirement

4 parts come in a colour no other set has for that mould

• Fence Decorative 3 x 3 x 2 Quarter Round with 2 StudsDark Tan · ×2
• Animal / Creature Body Part, Snake / Dragon Head Upper Jaw with 3 Ridges [Plain]Orange
• Animal Body Part, Dinosaur, Raptor / Dilophosaurus Lower Jaw [Plain]Orange
• Hair Long with Side Parting (with extra tolerance)Light Bluish Gray

6 parts appear in only a few other sets

• Brick Round 2 x 2 D. Tube with 45° Elbow and Axle Holes (Crossholes) at Each…Orange · ×2also in 77003 Super Shadow vs. Biolizard, 11217 Brick-Built Bluey Family
• Plate Special 2 x 8 with Door RailDark Tan · ×2also in 76416 Quidditch Trunk, 71814 Tournament Temple City
• Creature, Pixie with Black Eyes, Mouth PrintOpal Trans-Dark Bluealso in 76389 Hogwarts Chamber of Secrets, 76411 Ravenclaw House Banner (all Harry Potter)
• Brick Curved 1 x 3 x 2Reddish Brown · ×2also in 11041 Creative Dinosaurs, 910061 Antique Collection, 75422 Yoda's Hut and Jedi Training
• Cone Half 2 x 4 x 3Sand Green · ×2also in 76387 Hogwarts: Fluffy Encounter, 76389 Hogwarts Chamber of Secrets, 76402 Hogwarts: Dumbledore's Office, 76401 Hogwarts Courtyard: Sirius's Rescue (all Harry Potter)
• Headwear Accessory Crown / TiaraFlat Silveralso in 8831-4, 76411 Ravenclaw House Banner, 76463 Hogwarts Castle: Hospital Wing, 76462 Hogwarts House Crest

2 parts are otherwise only found in Harry Potter sets

• Cone 2 x 2 x 3 JaggedSand Green · ×3
• Cone Half 8 x 4 x 6Sand Green

6 existing moulds first came out in their colour in 2023, including in this set

• Brick Curved 1 x 3 x 2Reddish Brown · ×2
• Brick Round 2 x 2 D. Tube with 45° Elbow and Axle Holes (Crossholes) at Each…Orange · ×2
• Door 3 x 6Reddish Brown · ×2
• Plate Special 2 x 8 with Door RailDark Tan · ×2
• Brick Arch 1 x 2 JumperLight Bluish Gray
• and 1 more

4 minifigure parts with their print are only in this set

• Hips and Legs Under Dress/Robe with Black Under-Dress PrintLight Bluish Gray
• Minifig Head The Grey Lady, Silver Eyebrows, Lips, Pity Smile/Angry Open Mouth…White
• Torso, Sweater, White Shirt, Dark Green/Sand Green Tie, Hogwarts Slytherin…Dark Bluish Gray
• Torso, Tunic, Black Undershirt, White Collar Print, Light Bluish Gray Arms…Light Bluish Gray