Mamoswine is card #5 of 102 in HS—Triumphant (2010), a Rare Holo illustrated by Kagemaru Himeno. At about $3.87 it is the #88 most valuable card in the set. In a HS—Triumphant booster it turns up about once every 40 packs. It is one of 11 Mamoswine cards printed so far.
2008Legends Awakened
2009Rising Rivals
2010HS—Triumphant
2013Plasma Storm
2015BREAKthrough
2017Crimson Invasion
2022Astral Radiance
2025Journey Together

















See the full HS—Triumphant card list
An ungraded Mamoswine from HS—Triumphant sells for about $3.87. A PSA 10 is worth more, roughly $30.96 by our estimate, and a PSA 9 around $10.84.
It is a Rare Holo, and it shows up about once every 40 HS—Triumphant packs.
Kagemaru Himeno drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open HS—Triumphant 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.