The card Persecute Artist doesn't let the caster choose Rebecca Guay. This is a nod to the time when rumors that Guay was being fired as a Magic card artist led to an Internet Backdraft.
The twelfth edition's print of Giant Spider states that "The wild is always changing, but it does have a few constants." This is probably a reference to the fact that by this point, Giant Spider was the only card that has been in all core sets since the game's beginning.
A few cards in the Yu-Gi-Oh! card game are based upon storylines from the original manga from before the card game came to prominence:
Zombyra the Dark is based upon a character from a Show Within a Show Zombire, who is a Spawn Expy. Like Spawn, he gets closer to death the more he fights, represented by an ATK reduction.
Dark Master - Zorc was the Big Bad of the Monster World story arc, which was a Table Top Game. From that comes the die-rolling effect, including the fact that a lower roll is better and the highest roll is a fumble. And the art for its corresponding ritual spell card, Contract with the Dark Master, is based on the scene in which Zorc first reveals himself by transforming from a seemingly friendly NPC.