How can you tell your card is this one?

Look at the bottom of your card: you should read SWSH SWSH146/307 there.

Which set does it come from?

It comes from the SWSH Black Star Promos set.

SWSH Black Star Promos

Name: Poké Ball SWSH SWSH146
Brand: Pokémon

SWSHKOPromo

We cannot estimate this card right now.

Check the number and illustration against the card you are looking for.

How can you tell your card is this one?: Look at the bottom of your card: you should read SWSH SWSH146/307 there.
Which set does it come from?: It comes from the SWSH Black Star Promos set.

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

The Korean text is not available yet. Text shown: English.

Flip a coin. If heads, search your deck for a Pokémon, show it to your opponent, and put it into your hand. Shuffle your deck afterward.

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.

A strength
It retreats for free. You can pull it back to the Bench whenever you like, even with no Energy on it at all.
A strength
No Weakness printed on the card. Nothing doubles up the damage it takes.
Keep in mind
None of the 5,392 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.

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.