★ Mega Rising (B1) introduces the Mega Evolutions!
☆ New Decks: Mega Blaziken ex | Mega Gyarados ex
Mega Altaria ex | Mega Absol ex | Greninja ex
★ Events: Wonder Pick | Anniversary Celebration
☆ Trading Board: A4b and B1 Available for Trading!

This guide will show you how to build some of the strongest Omastar Decks. We'll cover the best Omastar Deck builds, how to use them, as well how to beat Omastar Decks, and more!
| The decks on this page reflect the meta around the Space-Time Smackdown Expansion. |
List of Contents
| Omastar Deck Variants | Strengths and Weaknesses |
|---|---|
Omastar and Articuno ex Deck
[★ Best ★] |
Strengths:
• Can sweep through teams after a successful Misty. • Can lock oppponents out of attacking with Omastar's disruptive Ancient Whirlpool. Weaknesses: • Weak to Lightning-type decks. • Makes use of Fossil Pokemon, which are difficult to set up. |
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| Energy Used | |||||||||||||||
Articuno ex is the deck's main attacker, being able to snowball through teams with a lucky Misty play. Omastar can be used for control, being able to lock opponents out of attacking.
| Expansions | Cards to Get and Packs to Open |
|---|---|
| Genetic Apex (A1) | Omanyte x 2 (Pikachu Pack) Omastar x 2 (Pikachu Pack) Articuno ex x 2 (Mewtwo Pack) Helix Fossil x 2 (Pikachu Pack) Misty x 2 (Pikachu Pack) |
| Mythical Island (A1a) | Leaf x 1 (Mew Pack) |
| Spacetime Smackdown (A2) | Giant Cape x 2 (Dialga Pack) Cyrus x 1 (Palkia Pack) |
| Triumphant Light (A2a) | Irida x 2 (Arceus Pack) |
| Shining Revelry (A2b) | No cards needed from this expansion. |
| Celestial Guardians | No cards needed from this expansion. |
| Extradimensional Crisis | No cards needed from this expansion. |
| Eevee Grove | No cards needed from this expansion. |
| Wisdom of Sky and Sea | No cards needed from this expansion. |
| Secluded Springs | No cards needed from this expansion. |
| Mega Rising | No cards needed from this expansion. |
| Promo-A | Poke Ball x 2 (Promo-A Pack) Professor's Research x 2 (Promo-A Pack) |


Omastar has a steep Attack Cost, so it is good to use Misty to try to get more Energy. Manaphy is also a good option since it also lets you safely evolve Omastar in the Bench.

Omastar can invalidate attackers with Ancient Whirlpool preventing them from attacking. Do note, however, that opponents can remove this condition by evolving or retreating. Use this on attackers that are already set up to steal a turn from opponents.


Lightning-type decks that do not require much setup can be effective in dealing with Omastar decks. In addition to the type advantage, they can also attack much quicker due to a lower Attack Cost, which may allow them to secure KOs.
Best Lightning Type Deck and Cards Tier List



Since Omastar takes time to set up, you can take advantage of this by knocking out its pre-evolutions. Sabrina and Cyrus can draw them out to the Active Spot. You can also use cards that can damage Benched Pokemon such as Genetic Apex Hitmonlee.

Best Omastar Decks and Card List



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