How can you tell your card is this one?

Look at the bottom of your card: you should read S12 77 there.

S12

Regidrago VSTAR S12 77

Name: Regidrago VSTAR S12 77
Brand: Pokémon

S12KO

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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 S12 77 there.
Which set does it come from?: It comes from the S12 set.

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

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

Choose an attack from a Dragon Pokémon in your discard pile and use it as this attack.