Sauron and his army come to the seven kingdoms, whose Army can defeat them? [ No spoiler from TV show please! (or use spoiler tags) ]

Sauron's army (as in the gondor Fight) used a wormhole, and get in the middle of the seven kingdoms. Who can stop them?

Round 1: they come to Kingslanding, by land.

Round 2: They come north of the wall

Round 3: The khaleesi's army of unsolid and her dragons fight them.

Extra round: Saruman's army of the white hand comes to help Sauron's.

Every round is supposed to take place during Season 4 of the GoT TV Show, the wildlings army before they attack the wall, kingslanding is defended by the full army of the Lannister and their allies (with unlimited food supplies).

__NO GoT TV Show spoil please!__