TERA players can now log into the game to try out the new content that just arrived with the Guardian Legion update. Most notably, the update brings a number of new activities for high level players including the addition of "hot spots" that show where an active participation area is live. Fifteen players can band together to take part in the action to close any one of the six missions.
After accumulating 100,000 Guardian Legion Points, players may redeem them for rewards (up to 40 times per character, per day) on the Map or World Map while Guardian Mode is active. Rewards include Guardian Legion reputation credits to exchange for enchantment materials through Supply Commissioners in Velika, Item XP, and a Guardian Legion Jewel box per redemption. Guardian Legion points (and redemption count) resets daily.
You can check out the full update notes on the TERA site.