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Ninja Boy cards.

3 cards across 2 sets
updated Aug 14, 2026
Most valuable$39.99Cards priced3Sets2All copies$42

Every Ninja Boy card we price, most valuable first. Prices are what copies actually sold for, updated daily.

Ninja Boy (League Cup), League & Championship Cards2Ninja Boy (League Cup)League & Championship Cards · 103/114$1.51Ninja Boy (League Cup) [Staff], League & Championship Cards1Ninja Boy (League Cup) [Staff]League & Championship Cards · 103/114$39.99Ninja Boy, XY - Steam Siege3Ninja BoyXY - Steam Siege · 103/114$0.41
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Ninja Boy · 3 cards
Ninja Boy (League Cup) [Staff], League & Championship CardsNinja Boy (League Cup) [Staff]$39.99LEAGUE & CHAMPIONSHIP CARDSNinja Boy (League Cup), League & Championship CardsNinja Boy (League Cup)$1.51LEAGUE & CHAMPIONSHIP CARDSNinja Boy, XY - Steam SiegeNinja Boy$0.41XY - STEAM SIEGE

What a Ninja Boy card is worth

The most valuable Ninja Boy on this list is Ninja Boy (League Cup) [Staff] from League & Championship Cards at $39.99, and the 3 priced copies across 2 sets are worth $42 together. Most of that sits in a handful of printings: the older the set and the scarcer the print run, the wider the gap to the rest.

If you are trying to identify which Ninja Boy you have, the set name is printed on the card and the collector number sits in the bottom corner. Open the card here and the page carries every printing of it, the graded prices, and whether grading the copy is worth the fee. Sets to start with: League & Championship Cards, XY - Steam Siege.