Does 10 damage times the number of Energy cards attached to the Defending Pokémon.
Devolution Beam
Choose an evolved Pokémon (your own or your opponent's). Return the highest Stage Evolution card on that Pokémon to its player's hand. That Pokémon is no longer Asleep, Confused, Paralyzed, or Poisoned, or anything else that might be the result of an attack (just as if you had evolved it).
“So rare that it is still said to be a mirage by many experts. Only a few people have seen it worldwide.”
How much is Mew #9/53 worth?
Right now (November 5, 2026) the going rate for an ungraded Mew #9/53 from Wizards Black Star Promos is about $112.49.
Grading changes the math on this one: a PSA 10 is valued around $12,163.57, roughly 108.1x the raw price, while a PSA 9 sits near $700.00. 11,155 copies have been graded to date, and 3% of them came back a 10 — worth knowing before you pay grading fees.
These figures come from nightly market-data syncs verified against completed sales. Use the chart above to see the trend before you buy or sell.