You either need the harmonize card to be an instant itself or to have some other effect in play that lets you play non-instants at instant speed
This strategic choice draws a fascinating parallel to how OP01-001-roronoa-zoro builds are often constructed, highlighting a shared philosophy in aggressive, board-centric play
If not, however, then the flexibility of Fiery ConfluenceFiery Confluence will come in handy, in all likelihood being one of the only artifact removal options in the deck, not to mention an additional utility creature board wipe if needed
And since Pokemon cards are worth a decent amount of money, fake cards often veer their heads in an attempt to fool unsuspecting players
I learned the hard way in the beginning and made many mistakes
You can only activate 1 "Karakuri Gama Oil" per turn