The spells and trap cards should cover for the weaknesses of your deck, and you should have a handful of each of the following: attack protection, effect negation, summon negation, spell/trap destruction
These boosters are intended to be usable for draft gameplay modes as well as for normal library expansion, as in years since the Set booster introduction, Wizards had found that stores favors those sales over Draft boosters
Pikachu Master Ball Reverse ($300+) A card that many overlook, but in fact is one of the most valuable cards in the set is the reverse holo masterball Pikachu
However, the fake pair has it the opposite way, where the left-sided lace goes above the right lace
Having this buddy sat on the board will give virtual card advantage by the bucket load, too, and will force opponents to spend removal to solve your failsafes