Regirock ex is card #99 of 106 in Emerald (2005), a Rare Holo EX illustrated by Hikaru Koike. At about $180 it is the #9 most valuable card in the set. In an Emerald booster it turns up about once every 88 packs. It is one of 19 Regirock cards printed so far.
2004Hidden Legends
2005Emerald
2006Legend Maker
2008Legends Awakened
2015Ancient Origins
2017Crimson Invasion
2020Vivid Voltage
2022Astral Radiance

















See the full Emerald card list
An ungraded Regirock ex from Emerald sells for about $180. A PSA 10 is worth more, roughly $2,340 by our estimate, and a PSA 9 around $720.
It is a Rare Holo EX, and it shows up about once every 88 Emerald packs.
Hikaru Koike drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Emerald 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.