The Guild Wars 2 site has been updated with a new post to announce community-run tournaments that can see first- and second-place team members in each taking home a pot of gems (2000 for 1st, 800 for second). All team members winning one or more rounds will also earn a mini Llama as well.
Tournaments will take place on both EU and NA realms each Wednesday. You can grab all the details and times by heading to the Guild Wars 2 site.
