Firstly, vehicles suck
Using A Whole New World forces each player to discard their hand and draw seven cards, potentially upsetting carefully built hands and throwing opponents off-balance
A few years later, we started getting pretty good elf cards, elf lords, and cards that make elf tokens, and today we have excellent competitive elf decks that swarm the board across different competitive formats
Jumping into TCGs for the first time with Ruby/Emerald might not be the best move, for example, but it's an excellent choice with the right tactics
The game will prompt you as though you were able to cast a spell or activate an ability, even if you are not, concealing your situation from your opponent
To finish off this recipe for one defeated opponent, add trample and serve with haste