When Neriv attacks, exile any number of cards from the top of your library equal to the number of differently named tokens you control
Obviously, when you combine two very popular characters into a single card and make the effect amazing, you get a valuable card
As a standalone product, it is definitley the weakest offering subjectively
40 lands might be a few too many, given the mana sources elsewhere in the deck, but this can always be addressed with a few upgrades
That token gains haste. Now, you can use this to copy whatever you like, but we recommend Delina, Wild Mage when possible
If you want to build a variation on Party Time with Tazri, I'd have you drop out the underperforming, overcosted cards that play better in sealed and draft and add in more removal and a few boardwipes