Board Thread:Spoilers!/@comment-27060727-20171014181959/@comment-25926288-20171215215157

The new promo definitely shows that Drizella will be the one petrified (as she's there with Gothel, so Gothel gets away).

The protective rune (which "Alice" drew) is actually whatever the hooded ones are using to cast a spell (looks like orange Elsa goo/fire). Regina is shown with something in hand, possibly casting something within that spell. Or fireworks, but I'm sure that's a curse.