Today's update to the official Japanese Pokémon TCG site reveals majority of remaining cards from the upcoming Transformation Mask expansion
Sophia Bowman 
Basic
Body Slam 60
Flip a coin. If heads, your opponent's Active Pokémon is now Paralyzed.
Seismic Toss 120
Weakness: ×2
Resistance: None
Retreat:
Basic
Leech Seed 20
Heal 20 damage from this Pokémon.
Weakness: ×2
Resistance: None
Retreat:
Stage 1 - Evolves from Phantump
Mega Drain 50
Heal from this Pokémon the same amount of damage you did to your opponent's Active Pokémon.
Forest Dump 130
Weakness: ×2
Resistance: None
Retreat:
Basic
Strength 10
Fire Tackle 50
This Pokémon also does 20 damage to itself.
Weakness: ×2
Resistance: None
Retreat:
Stage 1 - Evolves from Darumaka
Rolling Tackle 60
Inferno Onrush 210
This Pokémon also does 70 damage to itself.
Weakness: ×2
Resistance: None
Retreat:
Basic
Inviting Kiss
Search your deck for a Basic Pokémon and put it onto your Bench. Then, shuffle your deck. If you do, move an Energy from this Pokémon to that Pokémon.
Icy Snow 30
Weakness: ×2
Resistance: None
Retreat:
Basic
Curiosity
Your opponent reveals their hand.
Static Shock 30
Weakness: ×2
Resistance: None
Retreat:
Stage 1 - Evolves from Shinx
Big Bite 60
During your opponent's next turn, the Defending Pokémon can't retreat.
Weakness: ×2
Resistance: None
Retreat:
Stage 2 - Evolves from Luxio
Piercing Insight 120
Your opponent reveals their hand. Discard a card you find there.
Bolt Strike 250
Discard all Energy from this Pokémon.
Weakness: ×2
Resistance: None
Retreat:
Basic
Thunder Shock 10
Flip a coin. If heads, your opponent's Active Pokémon is now Paralyzed.
Weakness: ×2
Resistance: -30
Retreat:
Stage 1 - Evolves from Wattrel
Wind Charge 10
During your next turn, this Pokémon's attacks do 120 more damage to your opponent's Active Pokémon (before applying Weakness and Resistance).
Strong Volt 100
Discard an Energy from this Pokémon.
Weakness: ×2
Resistance: -30
Retreat:
Basic
Hyper Voice 20
Welcome Home Chime
Choose 1 of your Benched Pokémon and shuffle that Pokémon and all attached cards into your deck.
Weakness: ×2
Resistance: -30
Retreat:
Basic
Sand Attack 10
During your opponent's next turn, if the Defending Pokémon tries to attack, your opponent flips a coin. If tails, that attack doesn't happen.
Spooky Shot 30
Weakness: ×2
Resistance: -30
Retreat:
Stage 1 - Evolves from Sandygast
Sand Attack 60
During your opponent's next turn, if the Defending Pokémon tries to attack, your opponent flips a coin. If tails, that attack doesn't happen.
Spooky Sand 150
Weakness: ×2
Resistance: -30
Retreat:
Basic
Rollout 10
Double Scratch 20×
Flip 2 coins. This attack does 20 damage for each heads.
Weakness: ×2
Resistance: None
Retreat:
Stage 1 - Evolves from Sandshrew
Dig Claws 30
Earthquake 120
This attack does 10 damage to each of your Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Weakness: ×2
Resistance: None
Retreat:
Basic
Rock Shot 30
Discard an Energy from this Pokémon.
Weakness:
Resistance: None
Retreat:
Stage 1 - Evolves from Glimmet
Stun Poison
Flip a coin. If heads, your opponent's Active Pokémon is now Paralyzed and Poisoned.
Venoshock 30+
If your opponent's Active Pokémon is Poisoned, this attack does 100 more damage.
Weakness:
Resistance: None
Retreat:
Basic
Continuous Steps 10×
Flip a coin until you get tails. This attack does 10 damage for each heads.
Darkness Fang 20
Weakness: ×2
Resistance: None
Retreat:
Stage 1 - Evolves from Poochyena
Pack Hunt 30+
If Mightyena is on your Bench, this attack does 90 more damage.
Corner 60
During your opponent's next turn, the Defending Pokémon can't retreat.
Weakness: ×2
Resistance: None
Retreat:
Basic
Spit Poison
Your opponent's Active Pokémon is now Poisoned.
Spinning Attack 40
Weakness:
Resistance: None
Retreat:
Stage 1 - Evolves from Venipede
Poison Ring
Your opponent's Active Pokémon is now Poisoned. During your opponent's next turn, that Pokémon can't retreat.
Spinning Attack 60
Weakness:
Resistance: None
Retreat:
Stage 2 - Evolves from Whirlipede
Unjust Game
Put damage counters on your opponent's Active Pokémon until its remaining HP is 10.
Sludge Bomb 160
Weakness:
Resistance: None
Retreat:
Basic
Cutting Wind 30
Big Storm 90
Discard any Stadium in play.
Weakness: ×2
Resistance: -30
Retreat:
Basic
Ability: Incandescent Body
If this Pokémon is your Active Pokémon and is damaged by an opponent's attack (even if this Pokémon is Knocked Out), the Attacking Pokémon is now Burned.
Steel Burst 50×
Discard all Energy from this Pokémon. This attack does 50 damage for each card you discarded in this way.
Weakness: ×2
Resistance: -30
Retreat:
Basic
Playful Kick 20
Weakness: ×2
Resistance: None
Retreat:
Stage 1 - Evolves from Aipom
Ability: Wicked Tail
When you play this Pokémon from your hand to evolve 1 of your Pokémon during your turn, flip 2 coins. For each heads, choose a random card from your opponent's hand. Your opponent reveals those cards and shuffles them into their deck.
Gentle Slap 100
Weakness: ×2
Resistance: None
Retreat:
Translators Note: The ability いけずなしっぽ is a pun on the card's artwork. The word いけずな refers to a flower basket or plate used for flower-scattering rituals in a Shinto shrine. Ambipom's artwork depicts it on steps leading up to the shrine.
Basic
Double Draw
Draw 2 cards.
Razor Wing 20
Weakness: ×2
Resistance: -30
Retreat:
Stage 1 - Evolves from Ducklett
Fighting Wings 20+
If your opponent's Active Pokémon is a Pokémon ex or a Pokémon V, this attack does 90 more damage.
Gust 70
Weakness: ×2
Resistance: -30
Retreat:
Item - ACE SPEC
You can use this card only if you discard 3 cards from your hand. Search your deck for an Item card, a Pokémon Tool card, a Supporter card, and a Stadium card, reveal them, and put them into your hand. Then, shuffle your deck.
Pokémon Tool
If the Pokémon this card is attached to is in the Active Spot and is damaged by an attack from your opponent's Pokémon (even if it is knocked out), move an Energy from the Attacking Pokémon to 1 of their Benched Pokémon.
Supporter
Choose 1:
- Switch your Active Pokémon with 1 of your Benched Pokémon.
- During this turn, attacks used by your Pokémon do 30 more damage to your opponent's Active Pokémon ex and Pokémon V (before applying Weakness and Resistance).
Supporter
If you go first, you may use this card during your first turn.
Discard your hand and draw 5 cards.
