Guild Wars 2 Beta. Dynamic events gameplay.
While playing the game I ran across this escort event. After we arrived to the village (which was the destination of the caravan), it suddenly got attacked by centaurs.
Played as Elementalist, the Guild Wars version of Mage :)
Notes
About Dynamic Events http://www.guildwars2.com/en/the-game...
Note that this footage has been taken from an unfinished game and some things you see here might change over time.