Poliwag is card #58 of 95 in HS—Unleashed (2010), a Common illustrated by Naoyo Kimura. At about $7.41 it is the #56 most valuable card in the set. In a HS—Unleashed booster it turns up about once every 5 packs. It is one of 19 Poliwag cards printed so far.
1999Base Set
2001Neo Discovery
2003Skyridge
2005Unseen Forces
2010HS—Unleashed
2014Furious Fists
2017Sun & Moon
2022Lost Origin

















See the full HS—Unleashed card list
An ungraded Poliwag from HS—Unleashed sells for about $7.41. A PSA 10 is worth more, roughly $59.28 by our estimate, and a PSA 9 around $20.75.
It is a Common, and it shows up about once every 5 HS—Unleashed packs.
Naoyo Kimura drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open HS—Unleashed 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.