The star of the box
An extremely noteworthy example of the latter would be Illustrator Pikachu, an unnumbered promotional card that was released as a contest prize for CoroCoro Comic magazine subscribers that sent in their own Pokemon Trading Card Game artwork
Drawing cards equal to the number of monsters your opponent controls then placing on the bottom or top of the deck in any order the same number of cards is a brilliant way to search for new monsters or effects, especially since you can get even high-level monsters with ease in a single turn through tribute summons with the correct resources
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Whites focus on doing things with on-board permanents and lack of mana ramp mean that it would love an extra resource like this to track and spend
Crystal Wing Synchro Dragon X WIND Level 8 [ Dragon / SynchroEffect ] ATK 3000 DEF 2500 1 Tuner + 1+ non-Tuner Synchro Monsters Once per turn, when another monster's effect is activated (Quick Effect): You can negate the activation, and if you do, destroy that monster, and if you do that, this card gains ATK equal to the destroyed monster's original ATK until the end of this turn