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71842 LEGO Ninjago Rontu the Master Dragon thumbnail image

71842 LEGO Ninjago Rontu the Master Dragon
Images 5Description 
71842 LEGO Ninjago Rontu the Master Dragon
  • Rontu the Master Dragon thumbnail
  • Rontu the Master Dragon thumbnail
  • Rontu the Master Dragon thumbnail
  • Rontu the Master Dragon thumbnail
  • Rontu the Master Dragon thumbnail

LEGO 71842 Rontu the Master Dragon is a Ninjago set currently available at retail for $49.99 and is projected to retire in mid and late 2026. Current new-sealed secondary market prices range from $48 to $72, with the average above MSRP at $53.

Forecast Model

This represents the expected annual growth (CAGR) based solely on a forecast model.
LEGO 71842 Rontu the Master Dragon is a Ninjago Dragons Rising Season 3 set released in 2025, containing 381 pieces and 4 minifigures. The main build is a posable dragon with articulated tail, legs, wings, head, and jaw, two positions for riders on its back, and a stud shooter under each wing. Included minifigures are Lloyd, Sora, Wyldfyre, and Master of Misfortune Zarkt, each with weapon accessories. The set also includes a brick-built mini shrine with a hidden message revealed using Lloyd’s translucent reveal blade.

Once retired, the expected annual growth will be close to 5% after the second year, valuing the set between $58 and $61 shortly after it is retired.
Retirement risk. Rontu the Master Dragon is anticipated to retire shortly across most LEGO retail markets and regional LEGO.com platforms, with a number of regions having already done so.
All regions

For Sale (New/Sealed)

This chart shows the sales listing trends of 71842 Rontu the Master Dragon.
 (US) 71842 NINJAGO Rontu the Master Dragon 381 Pieces New Sealed
BrickEconomy Choice
$44.99
(US) Ninjago: Dragon's Rising (2025) 381pc RONTU THE MASTER DRAGON Set #71842 $44.99
-10.0%
(NO) 71842-1 Rontu the Master Dragon 2025 New Sealed $45.16
-9.7%
(VN) NINJAGO Rontu The Master Dragon Building Toy -Dragons Rising Model Building $47.99
-4.0%
(US) NINJAGO Rontu the Master Dragon Kids Toy 71842 $48.37
-3.2%
(US) 71842 Ninjago Dragons Rising - Rontu the Master Dragon - 381 pcs Sealed $48.44
-3.1%
(US) LEGO Ninjago Rontu the Master Dragon Rider 71842 381 Pieces Brand New In Box $49.99
(US) Official LEGO Rontu the Master Dragon $49.99
(CZ) BrickLink store POPISHOP - World of Bricks $51.64
+3.3%
(IT) NINJAGO DRAGON RISING 71842 - RONTU THE MASTER DRAGON - MISB $52.06
+4.1%
(DE) BrickLink store M&M Brick GmbH $53.45
+6.9%
(US) Ninjago: Dragon's Rising (2025) 381pc RONTU THE MASTER DRAGON Set #71842 $54.99
+10.0%
(US) Ninjago: Dragon's Rising (2025) 381pc RONTU THE MASTER DRAGON Set #71842 $57.50
+15.0%
(CA) LEGO7+ Ninjago Rontu The Master Dragon (381 Pieces) 71842 2025 $57.90
+15.8%
Show 7 more listings

Sets in Ninjago / Dragons Rising Season 3

71837 NINJAGO City Workshops

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 3,244 / 10
Availability Retail
71837 LEGO NINJAGO City Workshops
Retail $249.99
Available at retail

71848 The Temple Bounty

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 2,387 / 6
Availability Retail (Retiring soon)
71848 LEGO Ninjago The Temple Bounty
Retail $199.99
Available at retail
Retiring soon

71834 Zane's Ultra Combiner Mech

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 1,187 / 6
Availability Retail
71834 LEGO Ninjago Zane's Ultra Combiner Mech
Retail $99.99
Available at retail

71845 Lloyd’s Jet Mech

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 1,112 / 5
Availability Retail (Retiring soon)
71845 LEGO Ninjago Lloyd’s Jet Mech
Retail $109.99
Available at retail
Retiring soon

71836 Arc Dragon of Focus

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 869 / 8
Availability Retail
71836 LEGO Ninjago Arc Dragon of Focus
Retail $99.99
Available at retail

71832 Thunderfang Dragon of Chaos

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 668 / 6
Availability Retail (Retiring soon)
71832 LEGO Ninjago Thunderfang Dragon of Chaos
Retail $69.99
Available at retail
Retiring soon

71843 Rogue's Mech Dragon Rider

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 584 / 4
Availability Retail (Retiring soon)
71843 LEGO Ninjago Rogue's Mech Dragon Rider
Retail $74.99
Available at retail
Retiring soon

71844 Ninja Combat Vehicle

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 561 / 6
Availability Retail (Retiring soon)
71844 LEGO Ninjago Ninja Combat Vehicle
Retail $99.99
Available at retail
Retiring soon

71833 Ras and Arin’s Super Storm Jet

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 510 / 3
Availability Retired
71833 LEGO Ninjago Ras and Arin’s Super Storm Jet
Retail $49.99
Value $69.98
Growth  +40.0%

71830 Kai’s Mech Storm Rider

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 333 / 3
Availability Retail
71830 LEGO Ninjago Kai’s Mech Storm Rider
Retail $49.99
Available at retail

71841 Dragonian Storm Village

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 305 / 6
Availability Retired
71841 LEGO Ninjago Dragonian Storm Village
Retail $39.99
Value $60.15
Growth  +50.4%

71839 Arin’s Spinjitzu Battle Mech

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 213 / 3
Availability Retail
71839 LEGO Ninjago Arin’s Spinjitzu Battle Mech
Retail $22.99
Available at retail

71826 Dragon Spinjitzu Battle Pack

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 186 / 2
Availability Retail
71826 LEGO Ninjago Dragon Spinjitzu Battle Pack
Retail $19.99
Available at retail

71828 Lloyd's Pull-Back Race Car

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 181 / 2
Availability Retail
71828 LEGO Ninjago Lloyd's Pull-Back Race Car
Retail $24.99
Available at retail

71831 Ninja Spinjitzu Temple

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 158 / 4
Availability Retail
71831 LEGO Ninjago Ninja Spinjitzu Temple
Retail $39.99
Available at retail

71829 Lloyd's Green Forest Dragon

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 128 / 2
Availability Retail
71829 LEGO Ninjago Lloyd's Green Forest Dragon
Retail $19.99
Available at retail

71840 Rogue vs. Drix Race Car Duel

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 111 / 3
Availability Retail
71840 LEGO Ninjago Rogue vs. Drix Race Car Duel
Retail $22.99
Available at retail

71827 Zane's Battle Suit Mech

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 92 / 3
Availability Retail
71827 LEGO Ninjago Zane's Battle Suit Mech
Retail $9.99
Available at retail

30699 Mini Ninja Combo Mech

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces 80
Availability Retail
30699 LEGO Ninjago Mini Ninja Combo Mech
Retail $4.99
Available at retail

71838 Kai’s Motorcycle Speed Race

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 79 / 2
Availability Retail
71838 LEGO Ninjago Kai’s Motorcycle Speed Race
Retail $9.99
Available at retail

71824 Sora’s Dragon Spinjitzu Spinner

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 56 / 2
Availability Retired
71824 LEGO Ninjago Sora’s Dragon Spinjitzu Spinner
Retail $9.99
Value $13.71
Growth  +37.2%

71823 Kai’s Dragon Spinjitzu Spinner

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 54 / 2
Availability Retired
71823 LEGO Ninjago Kai’s Dragon Spinjitzu Spinner
Retail $9.99
Value $19.22
Growth  +92.4%

30700 Arin vs. Dragonian Battle

Theme / Subtheme Ninjago / Dragons Rising Season 3
Year 2025
Pieces / Minifigs 48 / 2
Availability Retired
30700 LEGO Ninjago Arin vs. Dragonian Battle
Retail $4.99
Value $10.09
Growth  +102.2%
Annual growth 34.3%

My Collection

Rontu the Master Dragon Reviews

41 reviews
4.8
Collectors
Investors
BrickEconomy Expert Review
“Ronto the Master Dragon offers a mixed experience, delivering a mid-sized dragon build with four minifigures at a reasonable price point of $49.99. While the set improves in person compared to promotional images, the mismatched molded head and brick-built jaw hurt its overall appearance, especially for fans expecting greater accuracy to the show. Still, it introduces a new dragon mold and brings a notable character to LEGO form for the first time, making it a worthwhile—if imperfect—addition for Ninjago collectors.”
 

About Ninjago Dragons Rising Season 3

LEGO Ninjago, also known as Ninjago: Masters of Spinjitzu, theme was introduced in 2011 and included sets that are based off of original storylines, a TV series and The LEGO Ninjago Movie, a movie based on the theme. The main premise of the Ninjago universe is based around six teenage Ninja, Kai, Jay, Cole, Zane, Nya, and Lloyd, who have been trained by their master Sensei Wu, fighting forces of evil to protect the land of Ninjago.

Dragons Rising Season 3 was introduced in 2025 and currently consists of 24 sets.
Read more
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...
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