Of course, a lot of newer cards released during development have not been added to the game yet, but likely will be added through updates
The card itself could be utilized in many different ways, giving Water-type decks that extra bit of consistency.
First, Dark Magician Girl was initially released only in North American as one of the 2 Secret Rare cards of the set Magician's Force and it seems that less than a hundred copies of this card have been graded
If you like grinding a game out, watching your board rebuild itself every time somebody clears it, and slowly burying the table in 2/2 robots, the Necrons are right up your alley
Basri Ket has a plains from Amonkhet, Teferi has an island from Dominaria, Liliana has a swamp from Dominaria, Chandra has a mountain from Kaladesh, and Garruk has a forest from an unknown plane- because we still dont know where hes from