As robort posted there are new cards. Here are the stats and info available. Spoilers were in spanish.
Thalia, Cathar Heretic - 2W 3/2 First Strike Creatures and Non-Basic Lands your opponents control enter the battlefield tapped.
This new Thalia is pretty awesome. Coupled with
Thalia, Guardian of Thraben it could be a new staple in Modern Death and Taxes.
Supplanter of Identity - 2UU 0/3 Whenever This Card attacks you may
exile target non-token creature. If you do This Card becomes a copy of that creature until end of turn. Return the exiled card to the battlefield under its owner's control at the beginning of the end step.
Decent
clone because of the
flicker effect. It can only copy creatures after attack has been declared so has limited appeal. Not as useful as
Clever Impersonator,
Altered Ego, or even
Evil Twin imo