Diglett is card #58 of 146 in XY (2014), a Common illustrated by Kanako Eo. At about $0.79 it is the #96 most valuable card in the set. In a XY booster it turns up about once every 9 packs. It is one of 29 Diglett cards printed so far.
1999Base Set
2003Skyridge
2006Crystal Guardians
2010HS—Triumphant
2014XY
2016Fates Collide
2019Unbroken Bonds
2021Chilling Reign

















An ungraded Diglett from XY sells for about $0.79. A PSA 10 is worth more, roughly $3.95 by our estimate, and a PSA 9 around $1.82.
It is a Common, and it shows up about once every 9 XY packs.
Kanako Eo drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open XY 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.