With Night Watch, they can hit the foe's Active pokemon while causing the opposing trainer to send 2 of the cards in their hand back into their deck
The primary reason Korean Pokemon cards are generally worth less is due to supply and demand dynamics
Real misprints come from the factoryproblems during the actual printing or cutting process that physically change how a card looks
For example, the green artifact Esika's Chariot, which has been a strong force in Standard for months, will now have a lower Crew cost but will enter the battlefield creating one 2/2 cat token instead of two
It too easily allows for access to a large portion of ones deck, without having to guess how far you need to go, and leaves the mana up for casting the cards drawn right away
Thats enough for me to take a look at weaker cards like Sword Coast Serpent or Fang Dragon