Just having this hero in play makes it significantly more difficult for your opponent to interact with you, and that makes it quite the powerful card
Currently, there are three ways to win the game: Be the first player to take all of their prize cards Knock out all of your opponent's in-play Pokemon Your opponent runs out of cards in their deck and can no longer draw when prompted Become the Very Best
Eri Eri gives the set a trainer chase with character demand
And by intimidating your opponent with growing field presence, it becomes even easier to tempt (or force) them to destroy your cards, which is exactly what you want
[Re: Aswan Apparition] 'Aswan Apparition''s effect does target a card in the Graveyard, so the effect will be negated if 'The End of Anubis' is face-up on the field
This will be important later, but basically it prevents undying from triggering if the creature had a +1/+1 counter on it at the time of death