Psyching out your opponent is a legit tactic #9 I'd bet this was a delibrate mistake from Pokemon's behalf to make this misprint worth money I might agree, but it wouldn't make the Pokemon Company any money, so I doubt this was intentional
Discarding two cards is part of the cost of the ability, so you can't activate the ability if you don't have at least two cards in hand
Final Sale Periods Orders placed during major sales events (such as Black Friday, Cyber Monday, or Boxing Day) and singles purchased within the first 7 days of a new set release are final sale
Keep an Eye on Reprints Many classic cards get reprints with new artwork
Trimming of corners can be done to all 4 or just 1 corner smooth and well rounded cards make for a professional appearance
While it can't hold a candle to the incredible value of expensive Gengar cards, like the one from Team Up, this card's artwork is unexpectedly good