LEGO Rontu the Master Dragon (71842)

NINJAGO · 381 pieces · 4 minifigures

Not retiring yet (on sale since 2025)

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Compare prices (US)

Regular price $49.99

LEGO.comSold out$49.99

. Amazon offers can be third-party (marked).

Similar sets with bigger discounts

Price history

Lowest price today: Not sold
Lowest we’ve recorded: $49.99; Barnes & Noble, Oct 11, 2026
LEGO’s regular price: $49.99
Tracked since: Sep 29, 2026; 1 price change since

Price records (3)

October 12, 2026 · Barnes & Nobleout of stock$49.99
October 11, 2026 · Barnes & Noble$49.99
September 29, 2026 · LEGO.comout of stock$49.99

Prices at LEGO.com, Amazon, Walmart, Target, Best Buy, and Barnes & Noble, checked daily. A line breaks when a store was out of stock or not selling the set.

Prices in other countries: Canada (EN) · Canada (FR)

Resale value

What the LEGO Rontu the Master Dragon actually sold for on BrickLink, the LEGO-owned marketplace, in the last 6 months.

New

$40.27

Median of 12 sales (worldwide), from $35.55 to $53.00

-19% vs LEGO’s regular price ($49.99)

Used

$29.00

Median of 1 sale (US sellers)

-42% vs LEGO’s regular price ($49.99)

Sales on BrickLink, updated daily (last update October 23, 2026). Few sales mean a less reliable figure.

Set details

Pieces: 381
Minifigures: 4
Ages: 7+
Released: 2025
Set number: 71842
Theme: NINJAGO
Price per piece: 13.1¢at today’s lowest price
LEGO.com rating: 4.6

LEGO Rontu the Master Dragon building instructions

Instructions bookletPDF, 36 MB

Official instructions from LEGO.com, free to download. The LEGO Builder app has them too, many with 3D steps. All instructions on LEGO.com

LEGO Rontu the Master Dragon parts list

363 pieces in 120 different parts and colors, plus 4 minifigures.

Minifigures

Lloyd, Bright Green Shoulder Armor and Mask, Hair
Sora, Dark Blue Shoulder Armor and Mask
Wyldfyre, Dark Red Outfit
Zarkt

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Parts list: Rebrickable.

About the LEGO Rontu the Master Dragon

LEGO® NINJAGO® Rontu the Master Dragon (71842) toy lets ninja fans aged 7 and up recreate action-packed scenes from season 3 of the NINJAGO Dragons Rising TV show. This building set for kids features a dragon toy with a posable tail, legs, wings, head and jaw, 2 positions to place a minifigure on its back and a stud shooter under each wing.

4 NINJAGO minifigures are included in the LEGO playset: ninja warriors Lloyd, Sora and Wyldfyre, each with a ninja weapon accessory, plus Master of Misfortune, Zarkt, for kids to play out epic good vs. evil battles. There is also a brick-built mini shrine with a secret message that Lloyd reveals with his translucent reveal blade accessory.

Sets and buildable action toys in the LEGO NINJAGO range (sold separately) include mechs, vehicles and temples so fans can role-play ninja action. Each ninja playset can be created with the LEGO Builder app, which guides you and your child on an easy and intuitive building adventure. Set contains 381 pieces.

LEGO® NINJAGO® dragon toy for kids – Rontu the Master Dragon toy lets boys and girls aged 7 and up recreate scenes from season 3 of the NINJAGO Dragons Rising TV show
Highly posable dragon figure – This large dragon model features a posable tail, legs, wings, head and jaw, 2 positions on its back for a minifigure, plus a stud shooter under each wing
Mini shrine – Battle role-play set features a small brick-built shrine guarded by Zarkt, which contains a secret message that Lloyd can decode with his translucent reveal blade accessory
4 NINJAGO® minifigures – This LEGO® building set comes with ninja warriors Sora, Wyldfyre, Lloyd and the villainous Zarkt with ninja weapon accessories for kids to play out good vs. evil battles
Birthday gift idea for kids – This LEGO® set provides a fun build-and-play experience and is a birthday gift idea for boys and girls aged 7 and up who have a passion for ninja action
A fun way to build – The LEGO® Builder app guides kids on an intuitive building adventure, where they can save sets, track progress and zoom in and rotate models in 3D while they build
A universe of LEGO® NINJAGO® sets – The extensive collection of ninja toy playsets (sold separately) lets kids escape into a fantasy world for imaginative play with their ninja heroes
Measurements – The Rontu the Master Dragon figure in this 381-piece LEGO® NINJAGO® building kit stands over 5 in. (13 cm) tall

Description: LEGO.com.

LEGO Rontu the Master Dragon: FAQ

Is the LEGO Rontu the Master Dragon retiring?

Not yet: the LEGO Rontu the Master Dragon isn’t flagged as retiring. LEGO.com doesn’t list it as “Retiring soon”. It has been on sale since 2025. We check every day and will update this page the day that changes. It is sold out on LEGO.com right now, often the last step before a set disappears.