Nidoking is card #45 of 114 in Steam Siege (2016), a Rare illustrated by Mina Nakai. At about $4.34 it is the #19 most valuable card in the set. In a Steam Siege booster it turns up about once every 42 packs. It is one of 22 Nidoking cards printed so far.
1999Base Set
2002Legendary Collection
2004FireRed & LeafGreen
2007Secret Wonders
2009Rising Rivals
2013Plasma Freeze
2016Evolutions
2019Team Up

















See the full Steam Siege card list
An ungraded Nidoking from Steam Siege sells for about $4.34. A PSA 10 is worth more, roughly $21.70 by our estimate, and a PSA 9 around $9.98.
It is a Rare, and it shows up about once every 42 Steam Siege packs.
Mina Nakai 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.