A lot of the time, you get 2 cards at the cost of discarding one other card
The Big Infernoids Going first: Infernoid Onuncu, when Summoned, destroys all other Monsters on the field including your own, but you can protect these with a milled copy of Loading
C Common Forbidden Forbidden Last Turn X TRAP This card can only be activated during your opponent's turn when your Life Points are 1000 or less
Regardless, Gravecrawler is there to provide one-mana sac fodder, opening up combo opportunities and generally doing everything but blocking
At the start, you can have one of these based on the pack selection
However, the English script also has a bad habit of verbally stating what the visuals convey mere seconds later, because the writers seemingly assumed that kids aren't able to understand subtlety