How many pieces are in the Kai's Source Dragon Battle?

Kai's Source Dragon Battle contains 120 pieces.

What age is the Kai's Source Dragon Battle recommended for?

This set is recommended for ages 4+.

When was the Kai's Source Dragon Battle released?

Kai's Source Dragon Battle was released in 2024.

Breaking News

LEGO Retiring Soon List – October 2026 Update

The Brick Fan • about 23 hours ago

LEGO Kai's Source Dragon Battle set 71815

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🏛 Ninjago

Set #71815

Kai's Source Dragon Battle

Kai's Source Dragon Battle (71815) is an impressive gateway set designed specifically to bridge the gap between junior builds and full-scale action playsets.

Before you buy

Who it's for: Ages 4+ · Beginner build Perfect for younger kids aged 4+ transitioning to standard LEGO bricks and Ninjago fans wanting a quick action set
Build: 120 pieces · about 0.8 hours Build time is an estimate.
Price: $37.99 list price · 31.7¢ per piece
Availability: Retired at LEGO

★★★☆☆ 3.6 community rating from 5 ratings

Fans appreciate the accessibility for younger builders and the striking trans-orange wing pieces, though experienced collectors note the build is too simplistic and brief for the price point.

$37.99

Check price on eBay

📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

Kai's Source Dragon Battle (71815) is an impressive gateway set designed specifically to bridge the gap between junior builds and full-scale action playsets. With its vibrant red and trans-orange color scheme, it captures the explosive energy of the Ninjago Dragons Rising arc while keeping construction accessible.

This set is perfect for younger Ninjago fans stepping up from 4+ junior sets or parents looking for a fun, quick build to share with kids. The inclusion of four distinct minifigures right out of the box makes it an instant play starter without needing additional purchases.

Skip this if you are an adult collector seeking complex building techniques or a massive display model. The simplified 4+ construction elements mean experienced builders will breeze through it in under an hour with minimal structural challenge.

✨ New

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Is Kai's Source Dragon Battle good for younger builders? What minifigures are included in set 71815-1? How does this dragon compare to other Ninjago dragon sets? Are there any exclusive parts in this retired Ninjago set?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

120

Pieces

⏱

0.75h

Estimated Build Time

📊

Beginner

Difficulty

📏

10cm × 29cm × 18cm

Dimensions

Build Highlights:

Poseable red dragon model featuring adjustable jaw, head, tail, legs, and four wings
Interactive play feature allowing kids to place a fire element in the dragon's mouth
Quick-start elements designed to help younger builders gain confidence
Includes four well-equipped minifigures for immediate roleplay battles

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

Not enough price history for a trend

C+

Investment Grade

⏳ Retired

As a 4+ targeted Ninjago set with a modest 120-piece count, 71815-1 sits in an interesting niche for the secondary market. While junior-focused sets historically don't command the massive premiums of UCS or large Modular buildings, the presence of specific characters like Wyldfyre and Climber Kai alongside Wolf Mask villains provides steady demand from completionist collectors and kids looking for affordable entry points into retired waves. The inclusion of unique molded parts like the trans-orange wings and marbled flame elements also gives it a slight edge over standard junior fare. However, because it is retired and built for younger hands, pristine sealed boxes will appeal mostly to niche Ninjago completists rather than high-growth investors.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

⚖ Compare Similar Sets

Source Dragon of Motion

Ninjago • 1,716 pcs

$149.99

Kai's Rising Dragon Strike

Compared to larger Ninjago dragon sets like Sora's Transforming Mech Bike Racer or larger seasonal dragons, 71815-1 prioritizes quick durability and playability over intricate detail. It serves as a stepping stone before diving into the complex 8+ or 14+ Ninjago waves.

4 Minifigures Included

Kai - Heavy Shoulder Guards

Wyldfyre, Shoulder Guard

5 parts

B+

Features four minifigures including Climber Kai, Wyldfyre, and two Wolf Mask adversaries, offering great roleplay value straight out of the box with standard weapons and shoulder guard accessories.

📦 Parts Inventory

Official piece count: 120
Parts cataloged in this inventory: 61 unique parts, 102 pieces
Minifigures: 4

The official piece count includes the 18 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

Bar Holder with Clip

Part #: 11090 2× Black

Brick Curved 2 x ...

Part #: 11477 1× Black

Plate Special 1 x...

Part #: 14704 1× Dark Bluish Gray

Tile Round 2 x 2 ...

Part #: 14769 4× Red

Brick Curved 2 x ...

Part #: 15068 2× Dark Tan

Brick Curved 2 x ...

Part #: 15068 1× Sand Blue

Weapon Sword / Ka...

Part #: 21459 2× Pearl Gold

Wheel 37mm D. x 2...

Part #: 2148 2× Black

Plant, Leaves 4 x 3

Part #: 2423 2× Magenta

Brick Curved 3 x ...

Part #: 24309 1× Red

Tile Special 1 x ...

Part #: 2432 1× Dark Blue

Plate Special 2 x...

Part #: 27261 4× Black

Brick 1 x 2

Part #: 3004 1× Dark Blue

Plate 2 x 4

Part #: 3020 3× Red

Plate 2 x 3

Part #: 3021 2× Dark Red

Plate 2 x 3

Part #: 3021 1× Black

Plate 2 x 2

Part #: 3022 1× Dark Blue

Brick Special 1 x...

Part #: 30237b 1× Black

Plate 2 x 8

Part #: 3034 1× Dark Blue

Brick Sloped 45° ...

Part #: 3039 1× Dark Blue

Brick 1 x 2 x 2 w...

Part #: 3245c 1× White

Brick Sloped 33° ...

Part #: 3298 2× Magenta

Brick Special 1 x...

Part #: 34816 2× Sand Blue

Plate Special 1 x...

Part #: 35480 2× Dark Tan

Technic Brick 1 x...

Part #: 3700 1× Black

Plate 1 x 4

Part #: 3710 1× Red

Plate Special 2 x...

Part #: 39767 1× Light Bluish Gray

Mudguard 2 x 4 wi...

Part #: 41854 2× Black

Plate 8 x 8 with ...

Part #: 41948 1× Medium Nougat

Brick Wedged, Cur...

Part #: 43712 1× Red

Hinge Plate 1 x 2...

Part #: 44567b 1× Black

Plate Special 1 x...

Part #: 44861 6× Red

Projectile, Arrow...

Part #: 46537 1× Light Bluish Gray

Dish 2 x 2 Invert...

Part #: 4740 2× Trans-Purple

Plate Special 2 x...

Part #: 47720 1× Black

Creature Body Par...

Part #: 4899pat0003 4× Trans-Orange

Weapon Sword with...

Part #: 4924pat0001 1× Pearl Titanium

Launcher, Brick S...

Part #: 49743c01 1× Dark Bluish Gray

Brick Wedged 3 x ...

Part #: 50373 1× Red

Wedge Plate 2 x 4

Part #: 51739 1× Dark Red

Animal Body Part,...

Part #: 5496 1× Dark Red

Hinge Plate 1 x 1...

Part #: 57906 1× Dark Red

Cone 1 x 1 [Top G...

Part #: 59900 4× Trans-Purple

Wheel 11 x 12 wit...

Part #: 6014b 2× Black

Plate Special 1 x...

Part #: 60470b 2× Bright Light Orange

Technic Pin with ...

Part #: 61332 1× Black

Brick Wedged, Slo...

Part #: 64867 1× Opal Trans-Purple

Brick Special 4 x...

Part #: 65186 1× Dark Red

Plate Special 2 x...

Part #: 65509 1× Dark Blue

Mech Leg, Right, ...

Part #: 70943c01 1× Dark Red

Mech Leg, Left, w...

Part #: 70946c01 1× Dark Red

Creature Body Par...

Part #: 72362pr0009 1× Pearl Gold

Technic Brick Spe...

Part #: 73109 1× Red

Technic Pin with ...

Part #: 80477 1× Dark Bluish Gray

Animal Body Part ...

Part #: 80497 3× Black

Wave / Flame Roun...

Part #: 85959pat0001 3× Opal Trans-Purple

Brick Sloped 30° ...

Part #: 85984 1× Magenta

Brick Sloped 30° ...

Part #: 85984 1× Dark Blue

Brick Special 1 x...

Part #: 86876 1× Light Bluish Gray

Animal Body Part,...

Part #: 87747 2× Black

Wedge Plate 3 x 4...

Part #: 90194 2× Red

Brick Curved 4 x ...

Part #: 93273 1× Black

Weapon Pike / Spe...

Part #: 93789 1× Flat Silver

Bracket 1 x 2 - 2...

Part #: 99207 1× Black

A great source for vibrant trans-orange marbled wing pieces and flame elements, alongside standard red and black structural plates useful for basic creature builds.

🛒 Where to Buy

eBay

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💎 Notable Parts

Trans-Orange Creature Body Part, Wing 11 x 6 with 3 Bars, Red Marble pattern (4x) $6.00

Opal Trans-Purple Wave / Flame Rounded Large with Marbled Trans-Orange Pattern (3x) $3.75

Pearl Gold Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] (2x) $1.50

Red Plate Special 1 x 2, Top Clip [Open O] (6x) $1.20

Est. BrickLink Part Value

$12.45

💡 MOC Potential

🌳 Use the trans-orange wings and flame pieces to enhance larger custom dragon MOCs

🤖 Incorporate the specialized red plates and clips into custom mech armor builds

🏰 Use the rock and plant elements to add terrain detailing to fantasy dioramas

Community Insights

Real opinions from Reddit and YouTube

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📖 Building Instructions 6

BI 3101, 64+4, 71815 1/3 V29

Download PDF

BI 3101, 28, 71815 2/3 V29

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BI 3101, 28, 71815 3/3 V29

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BI 3101, 64+4, 71815 1/3 V39

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BI 3101, 28, 71815 2/3 V39

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BI 3101, 28, 71815 3/3 V39

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Inventory Statistics

Unique Parts

120

Official Piece Count

102

Cataloged Inventory Pieces

Minifigures

The official piece count includes the 18 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Inventory Version: 1

Missing a piece? Use the Missing Piece Checker.