It has a strong body for a 5-mana creature, and making a 4/4 token each time you cast a single creature is bonkers
I, of course, might be biased because I was not a Zoroark player back then (well, I was in Expanded) and on the contrary, some of my best results as a competitor have been thanks to Mew VMAX but trying to remain objective I still think Mew is a bit highly placed
While theres no universal rule, most Commander decks should aim for around 38 or 39 lands, complemented by roughly 8 mana rocks, ramp spells, or mana-producing creatures (such as Sol Ring, Arcane Signet, Rampant Growth, or Birds of Paradise)
You can be especially spiteful with the Bowmasters and Narsets of the world, or you can just play the role of a leech and sit back with your Faerie Masterminds and such
Powerful in her own right, her ability makes her ideal in a deck full of Ninjas