League Battle Deck Upgrade Guide
Team Rocket's Mewtwo ex League Battle Deck Upgrade Guide
Three Team Rocket's Mewtwo ex in an all-Team Rocket deck: fill the Bench with Rocket Pokémon, then discard Benched Energy for big hits.
Quick verdict
The ratings are TurnZero HQ's own read on a 1 to 5 scale, not an official one. Compare this deck with every other one on the Pokémon battle deck directory.
Shop the Team Rocket's Mewtwo ex League Battle Deck on TCGplayer →What's in the box
These are the cards that decide how the deck plays. Each one links to its card page, with its current price.
Team Rocket's Mewtwo ex
Destined Rivals #81
×3. Erasure Ball does up to 280.
Team Rocket's Crobat ex
Destined Rivals #122
×2. Places 4 damage counters when it evolves.
Team Rocket's Spidops
Destined Rivals #20
×3. Attaches Energy from the discard pile each turn.
Team Rocket's Ariana
Ascended Heroes #202
×4. Draw to 8 if all your Pokémon are Team Rocket's.
Team Rocket's Proton
Ascended Heroes #208
×4. Three Rocket Basics, even going first.
Team Rocket's Energy
Ascended Heroes #217
×4. Two Psychic or Darkness in one card.
How it plays
Team Rocket's Mewtwo ex has Power Saver: it can't attack unless you have 4 or more Team Rocket's Pokémon in play. Once it can, Erasure Ball does 160 and lets you discard up to 2 Energy from your Benched Pokémon for 60 more each, up to 280. The rest of the deck exists to meet that condition and to put Energy on the Bench for Mewtwo to spend.
Team Rocket's Proton finds up to 3 Basic Team Rocket's Pokémon, and you can play it on your first turn even going first. Team Rocket's Spidops attaches a Basic Energy from your discard pile to itself each turn, which refills the Bench Energy Erasure Ball discards. Team Rocket's Crobat ex puts 2 damage counters on two of your opponent's Pokémon when you evolve into it. Team Rocket's Ariana draws to 5 cards, or to 8 if every Pokémon you have in play is a Team Rocket's Pokémon, which this deck usually manages.
Team Rocket's Energy provides 2 Energy in any combination of Psychic and Darkness, but only on a Team Rocket's Pokémon.
Is it Standard legal?
Every card in this deck is Standard legal. The Ultra Ball, Switch and Energy Switch in the box are older G prints, but each has been reprinted with the I mark and the same text, so the box copies stay legal.
Every upgrade card below carries an H, I or J regulation mark, the marks legal in Standard since the April 10, 2026 rotation, checked against our Pokémon card catalog on October 10, 2026. Basic Energy is always legal. See which cards are legal in each format for how regulation marks and reprints decide it.
Upgrade path 1: Meet Power Saver sooner
The deck's slow games are the ones where Mewtwo sits on the Bench waiting for a fourth Rocket Pokémon. More Benching speed fixes most of them. Precious Trolley, an ACE SPEC, puts any number of Basic Pokémon from your deck onto your Bench at once; replace Scramble Switch with it if your losses are slow starts rather than stuck Active Pokémon.
A fourth Team Rocket's Transceiver finds Proton or Ariana, and a second Team Rocket's Petrel finds any Trainer.
Precious Trolley
Surging Sparks #185
ACE SPEC: fill your Bench with Basics in one card.
Team Rocket's Transceiver
Ascended Heroes #209
Finds a Team Rocket Supporter.
Team Rocket's Petrel
Ascended Heroes #207
Finds any Trainer card.
What comes out: Scramble Switch (one ACE SPEC per deck), Team Rocket's Articuno and one Switch.
Upgrade path 2: Finish more Knock Outs
Crobat ex's 4 damage counters and Erasure Ball's 280 leave a lot of Pokémon one hit short. Maximum Belt adds 50 against an Active Pokémon ex, which turns a 280 Erasure Ball into 330, and Boss's Orders chooses the target. Note that Boss's Orders does not have "Team Rocket" in its name, so Ariana's draw-to-8 still works but Transceiver will not find it.
Night Stretcher gets back a Knocked Out Crobat ex to evolve again, which places another 4 damage counters.
Maximum Belt
Prismatic Evolutions #117
ACE SPEC Tool: +50 to an Active Pokémon ex.
Boss's Orders
Ascended Heroes #183
Pick the Pokémon Erasure Ball Knocks Out.
Night Stretcher
Ascended Heroes #196
A third copy, to replay Crobat ex.
What comes out: Two Team Rocket's Archer and one Energy Switch.
Other battle decks
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Decklist and release details checked against: Bulbapedia , PokéGuardian .
Upgrade the deck, then see what you're missing.
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