Fantastical Parade

Stage 2

{Water}{Colorless}{Colorless} Ancient Whirlpool 70
During your opponent's next turn, the Defending Pokémon can't attack.

Weakness {Lightning} +20

Retreat {Colorless}{Colorless}

Omastar

Genetic Apex

Ability Primordial Tentacles
As long as this Pokémon is in the Active Spot, your opponent's Active Pokémon can't retreat.

{Water}{Water} Aqua Split 90
This attack also does 30 damage to 2 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Weakness {Lightning} ×2

Retreat {Colorless}{Colorless}{Colorless}

Silver Tempest

Basic V

{Colorless} Primal Guidance
Search your deck for up to 2 Pokémon that evolve from an Item card that has "Fossil" in its name and put them onto your Bench. Then, shuffle your deck.
{Water}{Colorless}{Colorless} Tentacle Lock 110
If the Defending Pokémon is an Evolution Pokémon, it can't attack during your opponent's next turn.

Weakness {Lightning} ×2

Retreat {Colorless}

Omastar V

Team Up

Ability Fossil Bind
As long as you have fewer Pokémon in play than your opponent, they can’t play any Item cards from their hand.

{Fighting}{Colorless} Bite 60

Weakness {Grass} ×2

Retreat {Colorless}{Colorless}

Fates Collide

Stage 1

Ability Restoring Beam
Once during your turn (before your attack), you may search your deck for a Restored Pokémon and put it onto your Bench. Shuffle your deck afterward.

{Water}{Colorless} Spinning Attack 60

Weakness {Grass} ×2

Retreat {Colorless}{Colorless}

BREAK

Ability Dangerous Tentacle
Once during your turn (before your attack), you may switch 1 of your opponent's Benched Pokémon-EX with his or her Active Pokémon.

Omastar BREAK

Arceus

{Colorless}{Colorless} Time Spiral
Choose 1 of your opponent's Evolved Pokémon. Remove the highest Stage Evolution card from that Pokémon and have your opponent shuffle that card into his or her deck.
{Water}{Colorless} Primal Tentacles 30+
Does 30 damage plus 10 more damage for each Helix Fossil, Dome Fossil, and Old Amber in your discard pile.

Weakness {Grass} +30

Retreat {Colorless}

Majestic Dawn

Poke-POWER Primal Swirl
Once during your turn, when you play Omastar from your hand to evolve 1 of your Pokémon, you may remove the highest Stage Evolution card from each of your opponent's Benched Evolved Pokémon and put those cards back into his or her hand. You can't use more than 1 Primal Swirl Poké-Power each turn.

{Water}{Colorless} Send Back 40
Your opponent switches the Defending Pokémon with 1 of his or her Benched Pokémon.

Weakness {Grass} +30

Retreat {Colorless}

Power Keepers

{Colorless} Pull Down
If your opponent has any Evolved Pokémon in play, remove the highest Stage Evolution card from each of them and put those cards back into his or her hand.
{Colorless}{Colorless} Hydrocannon 30+
Does 30 damage plus 20 more damage for each Water Energy attached to Omastar but not used to pay for this attack's Energy cost. You can't add more than 40 damage in this way.

Weakness {Lightning} ×2

Retreat {Colorless}{Colorless}

Holon Phantoms

{Psychic}{Colorless} Bind 30
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.
{Psychic}{Colorless}{Colorless} Vengeful Spikes 30+
Does 30 damage plus 10 more damage for each Omanyte, Omastar, Kabuto, Kabutops, and Kabutops ex in your discard pile. You can't add more than 60 damage in this way.

Weakness {Lightning} ×2

Retreat {Colorless}{Colorless}

Omastar δ

Legend Maker

Poke-BODY Ancient Fang
As long as you have Kabuto, Kabutops, or Kabutops ex in play, Omastar's attacks do 20 more damage to the Defending Pokémon (before applying Weakness and Resistance).

{Colorless} Drag Off 10
Before doing damage, you may choose 1 of your opponent's Benched Pokémon and switch it with 1 of the Defending Pokémon. Your opponent chooses the Defending Pokémon to switch.
{Water}{Colorless}{Colorless} Hydro Splash 50

Weakness {Lightning} ×2

Retreat {Colorless}

Sandstorm

Skyridge

Poke-BODY Primal Stare
As long as Omastar is your Active Pokémon, your opponent can't play Basic Pokémon or Evolution cards from his or her hand to evolve his or her Active Pokémon.

{Water}{Water}{Colorless} Spook 50
The Defending Pokémon can't retreat during your opponent's next turn.

Weakness {Lightning} x2

Retreat {Colorless}{Colorless}

Legendary Collection

{Water}{Colorless} Water Gun 20+
Does 20 damage plus 10 more damage for each Water Energy attached to Omastar but not used to pay for this attack's Energy cost. You can't add more than 20 damage in this way.
{Colorless}{Colorless} Spike Cannon 30×
Flip 2 coins. This attack does 30 damage times the number of heads.

Weakness {Grass} ×2

Retreat {Colorless}

Neo Destiny

{Water} Prehistoric Water
If your opponent has any evolved Pokémon in play, choose 1 of them and flip a coin. If heads, your opponent takes the highest Stage Evolution card on that Pokémon and shuffles it into his or her deck.
{Water}{Colorless} Dark Tentacle 30
During your opponent's next turn, the Defending Pokémon can't evolve except from effects of attacks or Pokémon Powers. (Benching that Pokémon ends this effect.)

Weakness {Grass} ×2

Retreat {Colorless}{Colorless}

Dark Omastar

Neo Discovery

{Water} Squeeze 10+
Flip a coin. If heads, this attack does 10 damage plus 20 more damage and the Defending Pokémon is now Paralyzed. If tails, this attack does 10 damage.
{Water}{Water}{Water} Spike Barrage 20+
Flip a number of coins equal to the number of Energy attached to Omastar. This attack does 20 damage plus 20 more for each heads.

Weakness {Grass} ×2

Retreat {Colorless}{Colorless}

Fossil

{Water}{Colorless} Water Gun 20+
Does 20 damage plus 10 more damage for each Energy attached to Omastar but not used to pay for this attack's Energy cost. You can't add more than 20 damage in this way.
{Water}{Water} Spike Cannon 30x
Flip 2 coins. This attack does 30 damage times the number of heads.

Weakness {Grass} ×2

Retreat {Colorless}