You could also flip it face up from manifest dread, but in constructed, that kind of move would definitely be picked apart, so it's probably too slow
Over the past 30 years, a number of third-party grading services have popped up to authenticate and grade trading and sports cards
Meta Example: Flaaffy's This Ability allows you to attach a Basic Lightning Energy from your discard pile to one of your Benched Pokmon once per turn
Instant kill cards dont have to be terrifyingly dedicated pieces, though
The cards are very uniform, with only some annotations and a league stamp being the major varieties, although they are all extremely rare today
Generally, most find a matte back gives a good grip and a clear front lets you see the card rules and art easily