Mewtwo-EX is card #163 of 162 in BREAKthrough (2015), a Rare Secret illustrated by Mitsuhiro Arita. At about $208 it is the #2 most valuable card in the set. In a BREAKthrough booster it turns up about once every 197 packs. It is one of 89 Mewtwo cards printed so far.
1999Base Set
2003Ruby & Sapphire
2006Holon Phantoms
2009Pokémon Rumble
2015BREAKthrough
2019Unified Minds
2023Crown Zenith
202630th Celebration

















See the full BREAKthrough card list
An ungraded Mewtwo-EX from BREAKthrough sells for about $208. A PSA 10 is worth more, roughly $1,041 by our estimate, and a PSA 9 around $479.
It is a Rare Secret, and it shows up about once every 197 BREAKthrough packs.
Mitsuhiro Arita drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open BREAKthrough 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.