Shellshock acts as both removal and a resource generator, making it a high-value inclusion for any Red deck that cares about artifact synergy or the new Disappear triggers
Neo Genesis Dutch (EDITIE): Base Set
Buzzwole ex (two star-rarity) Tapu Koko ex (two star-rarity) Lycanroc ex (two star-rarity) Guzzlord ex (two star-rarity) Alolan Dugtrio ex (two star-rarity) Gladion ex (two star-rarity) Looker (two star-rarity) Lusamine (two star-rarity) Tapu Koko ex (rainbow-border, two star-rarity) Lycanroc ex (rainbow-border, two star-rarity) Guzzlord ex (rainbow-border, two star-rarity) Alolan Dugtrio ex (rainbow-border, two star-rarity) Last, but not least, there are a few one-star full art cards to try and pull
While Zoroark-GX did warp the metagame around it for a long time, plenty of other decks were played as well -- Zoroark-GX wasn't stronger than everything else, but it had the ability to adapt to the changes in the metagame in order to beat what was played
And one of the reasons that he is so easy to recur is because of our use of discard outlets