Save for the occasional showing in Vintage, 60-card decks have no use for Mystic Remora
However, it'll only be a gold card of that specific booster mascot (so you couldn't get Palkia ex from a Dialga booster pack)
In addition to getting classic Harpie monsters like Harpie Lady , Cyber Harpie Lady , and Harpies Pet Dragon in Legendary Collection 4 , you can also collect the brand new Harpie Lady Phoenix Formation and Harpie Dancer to make your Harpie Deck more powerful
Special Summon it, and if you do, it gains 200 ATK (even if this card leaves the field)
If a card would go to the discard pile, put it in the Lost Zone instead
In reality, its the cheapest option per pack