Rank S Marks take about 36+ hours to respawn after being killed or 24 hours after server maintenance. Each S Mark has a set of specific spawn triggers.
Agrippa the Mighty | Mor Dhona
Find lots of Treasure Maps.
Bonnacon | Western La Noscea
Harvest a La Noscean Leek from an Unspoiled Botanist Node (34,28) which spawns at 8:00AM Eorzean Time. Gathering skill of 400 or higher is recommended.
Brontes | Central Thanalan
Eat HQ food items within the vicinity of the spawn locations listed below:
(17,13) (18,17) (22,14) (27,21) (20,27) (22,34)
Croakadile | Lower La Noscea
Spawns at Nightfall (6:00 - 8:00PM Eorzean Time) during a Full Moon.
Croque-Mitaine | Middle La Noscea
Mine a Grade 3 La Noscean Topsoil from an Unspoiled Mining Node (25,27) which spawns at 7:00PM Eorzean Time. Gathering skill of 400 or higher is recommended.
Garlok | Eastern La Noscea
Have a Bard use Flaming Arrow at The Garlock's Lair. He also has a chance to spawn after Showers.
Laideronnette | Central Shroud
Spawns when the area rains 2 to 3 times in a row.
Lampalagua | Eastern Thanalan
Do Battlecraft leves in the area again and again.
Mahisha | Outer La Noscea
Have a tons of players dying again and again in the area.
Mindflayer | South Shroud
Spawns during one of the 3 New Moon nights.
Minhocao | Northern Thanalan
During the level 49 FATE "Core Blimey", kill Earth Sprites but do not turn in the cores collected. The mark will spawn nearby.
Nandi | Upper La Noscea
Have at least 10 players walk on the stone walkway with their minions out.
Nunyunuwi | Southern Thanalan
Take part in FATEs within the area again and again.
Safat | Coerthas Central Highlands
Have players jump off cliffs and receive fall damage that lowers their health to 1 again and again.
Thousand-cast Theda | North Shroud
Fish a Judgeray between 5:00 - 9:00PM Eorzean Time. Gathering skill of 360 or higher is recommended.
Wulgaru | Eastern Shroud
Requires the completion of the following FATEs:
The Gale that Rocks the Cradle and/or Below His Station.
Zona Seeker | Western Thanalan
Fish a Glimmerscale during Clear or Fair weather conditions. Gathering skill of 305 or higher is recommended.