There are no sideboards, and therefore no opportunity for selecting a companion or utilizing effects that reference outside the game (Masterminds Acquisition, Fae of Wishes, etc)
Because this card shows Pikachu doing something that most cards dont its running around the bustling streets of a city
Read the Bones This one is a lot like the last three but just a little better
UR Ultra Rare Alien Shocktrooper M-Frame X LIGHT Link 2 [ ReptileLinkEffect ] ATK 1900 DEF - 2 Reptile monsters (Quick Effect): You can discard 1 monster
While there are some other phenomenal options, these are the ones I think are most universally good, and will help be the glue in your decks
Geo Effects: Like Sacred Cards before it, depending on the field, monsters can be powered up or powered down depending on the type