If there is any Stadium card in play, this attack does 50 more damage, and this attack's damage isn't affected by Resistance or any effects on your opponent's Active Pokémon.
BREAKthrough was released in 2015. Series classification for this set is XY.
The checklist contains 165 cards, placing it in a mid-size expansion range. As of 2026, the set is 11 years old and now falls into an established back-catalog period.
M Mewtwo-EX (#159) is one of the Rare Ultra prints in this expansion.
M Mewtwo-EX is a BREAKthrough card from the 2015 release window. Its card type is Pokémon.
The rarity label is Rare Ultra. Printed HP is 230.
Energy typing is Psychic. As an evolution, M Mewtwo-EX develops from Mewtwo-EX.
Card rules text: Mega Evolution rule: When 1 of your Pokémon becomes a Mega Evolution Pokémon, your turn ends. Pokémon-EX rule: When a Pokémon-EX has been Knocked Out, your opponent takes 2 Prize cards.
Latest market snapshots place M Mewtwo-EX in BREAKthrough at roughly $129.48. Its 7-day movement is largely flat at -0.3%.
Versus its 30-day baseline of $134.60, this card is now 3.8% lower. The 90-day window shows a floor near $129.48 and a peak around $138.93 (7% total spread), which maps to low-volatility movement.
Rarity classification for this copy is Rare Ultra.
M Mewtwo-EX sits within a broader pool of M variants that can be compared by set, rarity, and price. This comparison sample includes 3 alternatives across 1 set.
Comparable prices currently cover $32.54-$156.38, a 381% band. Against the sample mean of $74.09, this card is +75%.
Notable alternatives include M Mewtwo-EX #160 (BREAKthrough) at $156.38, M Mewtwo-EX #64 (BREAKthrough) at $32.54, and M Mewtwo-EX #63 (BREAKthrough) at $33.34.
Current valuation lens: Short-term movement is stable (-0.3% over 7 days), with price action clustered near recent averages. The 90-day range spans $129.48 to $138.93 (7% spread), which indicates low-volatility behavior.
Current value is 3.8% below its 30-day reference ($134.60). Graded context points to a substantial premium curve, with PSA 10 at +951% above raw pricing.
PSA 9 is currently around $219.89, while PSA 10 is $1360.60.
