Whatever's happening on the plane seems to have the ability to turn the once good angels evil.

It's green cause it is flying hate.

Does this mean we could see new versions of Avacyn and her followers Bruna, Gisela, and Sigarda?

My guess is that the Lithomancer did something to the Angels.

But wouldn't that suggest that she's evil?

Not... evil, pissed.

Mmm, maybe. But I can't see her wanting to hurt innocents because of it. Not that it's impossible.

She blames Ugin and Soren for the current state of Zendikar? And she is visiting that on Sorin's home.

Just seems opposed to what we've seen of her thus far.

(It's in some of the other flavortext from the Blessed vs. Cursed deck)

I think that was just a leak

I might need to look up some of this other flavor text.

Clearly something happened with Avacyn if the Cursemute is no longer active and werewolves are back.

Aaah.

That's cool.

I'm still going with the idea that Sorin turned her into Avacyn, or if not that he used her somehow in the creation of Avacyn

Whatever her motivation might be, I hope it's not "vengeful ex-girlfriend/scorned lover/etc"

We do need an explanation for why Nahiri is still around.

She's an Oldwalker, from before oldwalkers got nerfed down.

But since newalkers do not live forever, she needs a reason to not be old and dead.

Like Sorin (who is old and dead) and Lili (who was old but she made more deals with demons).

that's part of why I'm thinking Avacyn

It would explain things.

Hmmm....maybe she was trapped in a hedron which helped make up the Helvault.