Mantine is card #27 of 114 in Steam Siege (2016), a Common illustrated by DemizuPosuka. At about $0.46 it is the #82 most valuable card in the set. In a Steam Siege booster it turns up about once every 6 packs. It is one of 16 Mantine cards printed so far.
2000Neo Genesis
2003Skyridge
2006Dragon Frontiers
2010HeartGold & SoulSilver
2016Steam Siege
2019SWSH Black Star Promos
2021Fusion Strike
2024Surging Sparks

















See the full Steam Siege card list
An ungraded Mantine from Steam Siege sells for about $0.46. A PSA 10 is worth more, roughly $2.30 by our estimate, and a PSA 9 around $1.06.
It is a Common, and it shows up about once every 6 Steam Siege packs.
DemizuPosuka 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.