5 Game of Thrones promos tease doom, duels and possibly death?

Thursday, HBO announced that the first trailer for Game of Thrones season four would debut this Sunday. They also confirmed that the series would return on April 6, so forget winter: Spring is coming! These days everyone's obsessed with trailers for trailers, and HBO has released five for Game of Thrones.

The videos were posted on Vine, which means they're short ... but boy howdy, are they sweet, especially for fans of the book who know the context. One has Jon Snow in battle mode, facing off against what looks like a crew of wildlings. One features Tyrion in bondage for a TBA crime (tee hee). One features Danerys looking contemplative -- maybe she's wondering where her dragons are. And, perhaps most tantalizing, one shows us Pedro Pascal as Oberyn Martell in what looks like a pretty desperate duel.

It certainly seems like HBO is getting bolder -- some of the moments teased in these snippets, and thus destined to appear in the trailer, are pretty huge in terms of their impact on the overall story, so one can't help but wonder what other surprises lie in store when the show returns April 6.

Check out all five promos and tell us what you think -- but remember your spoilers tags!

(via EW)

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