This isnt the first time a combination of Lorcana cards has managed to go technically infinite
Clay-Fired Bricks The comparisons here are to Birth of Meletis and Ambitious Farmhand, likely for some kind of Yorion midrange game objects deck
Cid, Timeless Artificer Cid, Timeless Artificer is an interesting build-around that I imagine comes in two flavors: You either go hard on looting, cycling, and self-mill to throw multiple copies of Cid in the graveyard, or you do some Mirror Box shenanigans
(2/4/2023) Phasing out doesn't cause permanents to leave or re-enter the battlefield, so no "leaves the battlefield" or "enters the battlefield" abilities will trigger
That being said, there is undeniably a strong theme to this deck, and if you are interested in a deck with strategy built in from the start rather than a deck with good bits and pieces, then this could be the deck for you
As for the card itself, Miku's Spark takes the Sakura design and gives it a bit of a "Spark" as the name suggests, adding some pink lighting that Miku is casting