yugioh starter cards Yu-Gi-Oh!: TCG Deck Link Strike (Retail Edition) Starter Box - Yugipedia

A few more of these rare league cards can be found through other means, too

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

The background immediately behind Hydreigon is multicolored, possibly referencing the visual effect from the video games that takes place when a Shiny Pokmon enters the battlefield

Then the Green one that finishes us will return two cards of the permanent size and then exile

Also, as an artifact, there's a few other ways it might be useful with certain other cards that want to interact with artifacts in Blue