Ancient Pinepeak, Guardian of the Thicket
Collect "Enchanted Runestones" from Syldon stalkers which are near the Sarnak fort in the Northwest.
Turn in Enchanted Runestones to grove guardians which range east and north from the Druid rings to the Overthere zoneline.
After turning in approximately 30 Enchanted Runestones, there is a zonewide emote, and Syldon couriers start to spawn at the Sarnak fort, and run from there to the Overthere zoneline. They will not stop to fight, but can be snared, rooted, or mezed.
You must stop all the Syldon couriers from reaching the OT zone. After about 12 minutes, a zonewide emote will either indicate you failed if any couriers got past, or that you stopped them all. Success means that Ancient Pinepeak will spawn, and everyone in the zone will be buffed with Ancient Pinepeak's Blessing