Mew ex can use the attacks of all Pokémon in play as its own. (You still need the necessary Energy to use each attack.)
Attacks
Power Move
Search your deck for an Energy card and attach it to Mew ex. Shuffle your deck afterward. Then, you may switch Mew ex with 1 of your Benched Pokémon.
How much is Mew ex #88/92 worth?
Mew ex #88/92 is a Rare Holo EX card from Legend Maker (2006) — today it trades at roughly $125.01 ungraded.
Grading changes the math on this one: a PSA 10 is valued around $14,952.14, roughly 119.6x the raw price, while a PSA 9 sits near $6,754.85. 1,098 copies have been graded to date, and 7% of them came back a 10 — worth knowing before you pay grading fees.
We update this valuation every night from live market data and verify it against real completed sales — see the chart above for how Mew ex has moved over time.