Mega Starmie ex is card #21 of 88 in Perfect Order (2026), a Double Rare. In a Perfect Order booster it turns up about once every 48 packs. It is one of 35 Starmie cards printed so far.
1999Base Set
2003Skyridge
2008Legends Awakened
2012Next Destinies
2015Primal Clash
2019Hidden Fates
2023151
2026Perfect Order

















See the full Perfect Order card list
It is a Double Rare, and it shows up about once every 48 Perfect Order packs.
Yes, as a digital simulator. Holobrook lets you open Perfect Order 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.