As it is, its really good in squirrel decks like Chatterfang or Hazel, and you can even conjure it with Euru, Acorn Scrounger on MTG Arena
This deck has some powerful fusion monsters to pick from El Shaddoll Construct can best any special summoned monster in battle, El Shaddoll Apkallone can negate the effects of any face-up card on the field, and El Shaddoll Winda is a floodgate that prevents either player from special summoning more than once per turn.
She can pad out the board nicely
If Nyla returns to the battlefield as a new object (such as if you airbend it and cast it again), it doesn't maintain connection to cards exiled by Nyla previously, and they cannot be targeted to return by the current Nyla
The new cards are fun, but only a couple will see play outside of Morph/Disguise decks, particularly Unexplained AbsenceUnexplained Absence and Showstopping SurpriseShowstopping Surprise
No one expected the game to amass over half a million players so quickly
