Stone Cold Summer

In the lead-up to the Veil of Alaris expansion release in 2011, EQ added a limited time shared task and a group mission. These quests have returned in 2014 and 2015.

Quests
Each of these have a six hour lockout. Completing these grant achievements. The achievements may be found in the achievement window under EverQuest > Special.

Shared task

Only The Blind Will See (Allakhazam, EQ Resource). The task has eight versions, depending on your level. The reward is an achievement and Ancient Artifact.

Group mission

Baga's Stand (Allakhazam, EQ Resource). 3-6 players. To request Baga's Stand, you must have completed one of the Only The Blind Will See tasks, but that is not needed to participate. Reward is an achievement and Ancient Text.

2014
On August 20, 2014, they announced the tasks and mission would be brought back for a limited time in September.