Onix is card #65 of 115 in Unseen Forces (2005), a Common illustrated by Yukiko Baba. At about $41.00 it is the #83 most valuable card in the set. In an Unseen Forces booster it turns up about once every 6 packs. It is one of 31 Onix cards printed so far.
1 copy has been graded by players in Holobrook's grading game. None has come back a 10 yet.
POP 1 is still open for PSA, BGS and CGC: the first player to grade this card a 10 with each company gets a one-of-a-kind POP 1 slab. See the Mint
1999Base Set
2002Legendary Collection
2004Team Rocket Returns
2005Unseen Forces
2008Stormfront
2013Plasma Freeze
2019Hidden Fates
2022Pokémon GO

















See the full Unseen Forces card list
An ungraded Onix from Unseen Forces sells for about $41.00. A PSA 10 is worth more, roughly $533 by our estimate, and a PSA 9 around $164.
It is a Common, and it shows up about once every 6 Unseen Forces packs.
Yukiko Baba drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Unseen Forces 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.