This card works great with other red recursive spells like Trash for Treasure and Daretti, Scrap Savant
This is thanks to the set effectively containing four different products, rather than the usual measly two
So if we take the amount of seconds it takes to generate a similarity score and the total amount of cards (10,856) there are in the dataset, we get this: (0.12+0.08) * 10,856 = 2171.2 s 2171.2/60 = 36.2 minutes To get a prediction on what a single input image is, we would have to wait well over 30 minutes
"Harpie Channeler" has essentially become the main card in all Harpie-based decks, as she can Special Summon another Harpie monster from the Deck while also assisting in Xyz Summoning Rank 4s or 7s, while "Hysteric Sign" helps searching either "Elegant Egotist" or any Harpie cards you may need, depending on how you use it
In both cases, once your deck has been built with the cards from the packs, you can then use that deck in duels