I've always wanted to grade some of my cards but didn't want to pay for that many at once
Tons of weaker versions exist now, but this one is still the gold standard because its cheap and simple, and it finds literally anything
If your opponent discards a card while you control Leyline of the Void, abilities that check whether a card is discarded (such as Hollow One, or a madness ability of the discarded card) still work, even though that card never reaches that player's graveyard
Enchanted creature can't attack or block, and its activated abilities can't be activated
Instead of beating Pokmon to earn six prize cards, TCG Pocket gives players the win after they knock out three
And of course, there are Commander printings, and some cards will make much more sense in an EDH deck than in a 60-card one