30th Celebration

Cosmoem

30C079· Common
Cosmoem 30C 79

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Versions of this card

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What the card itself says

Its characteristics and effects in play, with the original text when available.

HP
100
Type
Psychic
Stage
Stage 1
Retreat cost
3
Weakness
×2
Resistance
-30
Number
79/128
Set
30th Celebration30CSet guide
Illustrated by
Masako Tomii

Its attacks

Stiffen

During your opponent's next turn, this Pokémon takes 60 less damage from attacks <em>(after applying Weakness and Resistance)</em>.

What to make of it

Have a look at what it does well, then at what will get in your way. After that you'll know whether it belongs in your deck.

  1. Keep in mind

    Retreat cost 3. Once it is out front, it stays there. Pack something that moves it another way, or you will burn whole turns discarding Energy.

  2. Keep in mind

    None of the 3,649 tournament lists we have read runs it. That does not make it a bad card — it means we have not seen it on a table yet.

  3. Keep in mind

    Weakness Darkness ×2. Against a Darkness Pokémon, apply that to the damage it takes — it climbs fast. Of the 3,649 tournament lists we have read, 2,211 run at least one Pokémon of that type.

Who plays it

None of the tournament lists we have read mentions this card. That happens with a card that has just come out, or one players have not tried yet.

When it came out

30th Celebration landed here on 16 September 2026.

Every set, with both of its dates