Flashback is a nice upside to have over the usual template, but at 5 mana, its hardly something that makes it as exciting as a card like Deadly Dispute
Japanese cards carry lower counterfeit risk because the complex Japanese text is harder to replicate, domestic distribution is tightly controlled, and the print quality (embossing, foil, cardstock) is expensive to reproduce
It has a slightly more subtle, negative artwork this time
Heres the step-by-step process straight from the TCG game director, Atsushi Nagashima
In Pokmon TCG Pocket they form a distinct classification, marked with the Ultra Beast symbol
This is great for countering removal and burn spells, but no good against board clears or each opponent effects