Chansey is card #80 of 108 in Dark Explorers (2012), a Common illustrated by Kagemaru Himeno. At about $6.18 it is the #50 most valuable card in the set. In a Dark Explorers booster it turns up about once every 6 packs. It is one of 25 Chansey cards printed so far.
1999Base Set
2003Ruby & Sapphire
2005Unseen Forces
2010HeartGold & SoulSilver
2012Dark Explorers
2014Phantom Forces
2018Lost Thunder
2021Fusion Strike

















See the full Dark Explorers card list
An ungraded Chansey from Dark Explorers sells for about $6.18. A PSA 10 is worth more, roughly $49.44 by our estimate, and a PSA 9 around $17.30.
It is a Common, and it shows up about once every 6 Dark Explorers packs.
Kagemaru Himeno drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Dark Explorers 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.