Check out the promo card design below:
Anya, Merciless Angel
Card Set(s) -Anime 25th Collection- [EB-02] CARD VIEW EB02-022 | R | CHARACTER Usopp Attribute Ranged Block icon 3 Type East Blue/Straw Hat Crew Effect [On Play] If you have 2 or less Characters with 5000 power or more, play up to 1 Character card with 6000 power or less and no base effect from your hand
Self-Mill Whether its zombie tribal, Syr Konrad, the Grim, dredge, delve, escape, or other things that want to fill the graveyard, these cards have a lot of utility
Other Elves players really like the interaction between Yavimaya and Elvish Champion, which is just another angle that the card works on, even if I personally leave that for the sideboard
If you're playing a Hideaway land like Spinerock Knoll, you can use Zell's ability to bounce it into your hand and refresh the card hidden there after you played the first one