Here are the top valued cards of Pokmon TCG: Sword & Shield Lost Origin with market values observed on TCGPlayer as of this writing: Giratina V Alternate Art 186/196: $221.38 Aerodactyl V Alternate Art 186/196: $101.66 Rotom V Alternate Art 186/196: $41.80 Giratina VSTAR Gold Secret Rare 186/196: $37.06 Galarian Perrserker V Alternate Art 186/196: $26.01 Giratina VSTAR Rainbow Rare 186/196: $25.75 Giratina VSTAR 186/196: $22.78 Hisuian Zoroark VSTAR Gold Secret Rare 186/196: $20.64 Hisuian Goodra VSTAR Rainbow Rare 186/196: $19.41 Giratina V Full Art 186/196: $17.74 Colress's Experiment Full Art Trainer Supporter 186/196: $16.57 Lady Rainbow Rare Trainer Supporter 186/196: $16.10 Hisuian Zoroark VSTAR Rainboq Rare 186/196: $14.37 Arezu Full Art Trainer Supporter 186/196: $13.74 Lady Full Art Trainer Supporter 186/196: $13.52 This Pokmon TCG expansion includes a Trainer Gallery subset

I too share the same feelings, as I too felt clueless to what was happening for the first few times, dont be afraid, ask questions and pay careful attention
Given its exclusivity to Japan, it's a difficult card to find if you try to find it at local shops in North America and Europe
Only the Base Set Shadowless Pikachu cards from this specific deck are known to have this error, so it is likely that the error only affected the plates for this deck
These creatures get much better when you have good instants by your side
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