Ninja Boy is card #103 of 114 in Steam Siege (2016), a Uncommon illustrated by Megumi Mizutani. At about $0.42 it is the #96 most valuable card in the set. In a Steam Siege booster it turns up about once every 9 packs.


















See the full Steam Siege card list
An ungraded Ninja Boy from Steam Siege sells for about $0.42. A PSA 10 is worth more, roughly $2.10 by our estimate, and a PSA 9 around $0.97.
It is a Uncommon, and it shows up about once every 9 Steam Siege packs.
Megumi Mizutani drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Steam Siege booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.