This set has a few decent chase cards in the set, and all of them are variations of Mega Charizard
As a bonus, ability, as if this card needs it, you can tap it and sacrifice ten nonland permanent to make all your opponents lose 10 life
While this is an effect that can more reasonably be tracked with paper cards, it becomes substantially simpler in a digital space
Once your end step begins, it's too late to put a counter on Wakka in order to cause this ability to trigger.
Without some sort of answer to Avacyn however, your opponents will be facing down your indestructible board state
The Shelob version of this deck already wants a reasonable amount of removal to proc its Food-making ability, so a card that rewards you when your opponents' creatures die is right at home