During your opponent's next turn, prevent all damage done to each of your Pokémon from your opponent's Pokémon-EX. (If this Pokémon is no longer your Active Pokémon, this effect ends.)
Current valuation lens: Over the last 7 days, prices have remained stable at 0.0%, indicating a consolidation phase over sudden breakouts. The 90-day range spans $29.63 to $31.55 (6% spread), which indicates low-volatility behavior.
Current value remains close to its 30-day mean ($30.00). The clearest graded reference is PSA 9 at $81.24, or +174% relative to raw.
M Diancie-EX (XY Black Star Promos) is presently valued at about $29.63 in raw condition. Week-over-week change is limited (0.0%), indicating short-term stability.
That is close to the 30-day average of $30.00. Its 90-day trading band runs between $29.63 and $31.55, producing a 6% range and low-volatility behavior.
The listed rarity for this print is Promo.
M Diancie-EX is a XY Black Star Promos card from the 2013 release window. Its card type is Pokémon.
The rarity label is Promo. Printed HP is 190.
Energy typing is Fairy. This gives collectors a clear identity footprint for the print.
This card evolves from Diancie-EX. Printed card effect: Mega Evolution rule: When 1 of your Pokémon becomes a Mega Evolution Pokémon, your turn ends.
XY Black Star Promos entered circulation in 2013. Series classification for this set is XY.
The checklist contains 216 cards, placing it in a large expansion range. As of 2026, the set is 13 years old and fits a legacy-era profile.
In the XY Black Star Promos checklist, M Diancie-EX occupies position #XY44 as a Promo card.