Even without Lickitung in the picture, its common for games to be decided with only a few cards left in deck for both players, or most commonly, for you to need resources and be stuck with a dead Professor Oak
Once you have the cards in your hand, you can look at them and choose your basic Pokmon
If you were to enter a competitive Commander tournament with a precon deck, your chances of dealing with opponents sporting infinite combos as quickly and effectively as possible and winning would be extremely low
Drawing an extra card each turn (maybe two with extra combats) gives you ample cards to take advantage of the powerful activated ability
Rigid acrylic helps preserve the condition of sealed booster boxes
It can accelerate energies via its attack, dish out serious damage as well, and can enable players to pull any two cards they want from their deck at whim