HBO sure knows how to whet our appetites for Game of Thrones Season 3.

A few days after unveiling the first poster in anticipation of new episodes - and reminding us they premiere on March 31 - the network ran the first ad for Season 3 last night.

It doesn't reveal any upcoming footage, but it does tease us with the following quote: The great war is between death and war, ice and fire. If we lose, the night will never end.

Sounds like something Melisandre might say, no? Watch now and take your best guess as to the meaning of these words and the identity of the woman behind them:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.