Timeless Legends

The four objects have shared spawn points, you can find them in multiple predefined locations over the Timeless Isle. They are rare and have a yet unknown respawn timer but check the locations below frequently and you'll get them all sooner or later.

These objects are the officially confirmed way to break into the Mysterious Den, where [npc=71864] resides along with one of the Sturdy Chests.

Verified locations (by myself):

Conjuncted map with all verified spots

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• 47.3-80.8 --- South side of the ramp that leads up to Firewalker Ruins.
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• 55.3-50.3 --- Under the broken bridge, in front of the Mysterious Den.
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• 63.1-45.3 --- On a ledge to the west of the pathway in the Blazing Way area.
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• 55.6-59.3 --- On the top of the hill-spike that connects the upmost pair of Ordon bridges.
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• 50.4-71.7 --- On the stoned area east of the Everlasting Spritewood.
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• 68.4-60.4 --- Near the ruined tower on the east as you pass through the bridge from Firewalker Ruins.
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• 42.8-55.4 --- Next to [npc=73303]'s tribune.
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• 48.0-51.2 --- On a rock, north side of Mossgreen Lake.
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• 25.0-71.9 --- Next to the Alliance camp graveyard.
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• 64.5-72.3 --- On a stump in Croaking Hollow.
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• 55.1-72.9 --- On the northern slump scraps @ Firewalker Ruins.
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• 33.8-54.5 --- At the entrance of Celestial Court (arena).
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• 37.7-41.1 --- On a small rock halfway between the Celestial Court and 3-Breeze Terrace.
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• 39.6-77.8 --- Next to the broken shrine at Pi'jiu village.
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• 65.4-51.7 --- On a rock next to the daily quest giver [npc=73570].
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• 52.2-62.6 --- Southeast of Mossgreen Lake.
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• 32.0-61.5 --- Southwest of Celestial Court.
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• 32.6-32.8 --- On a rock at the west side of 3-Breeze Terrace.
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• 22.4-38.7 --- Next to the Horde camp graveyard.
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All waypoints on all the wowhead pages so far for one pasteable macro. Found two Cloudstrike Helms within 10 minutes, and two Tridents within 10 minutes, though I'm certain they weren't up at the same time. They were shiny, tiny mogu heads. Big enough to be apparent if you're looking for them. Reply to this post and I'll add yours. Got Cloudstrike Helm and Trident in same location in <45 minutes. Took about 4 hours on a low pop server to find all four.

/way 43 55
/way 25 72
/way 50 72
/way 56 59
/way 47 81
/way 55 50
/way 63 45
/way 33 55
/way 55 72
/way 68 60
/way 39 77
/way 32 32
/way 65 52
/way 32 62
/way 48 51
/way 67 72
/way 37 40
/way 52 62
/way 22 38
Edited: Removed duplicates. Added recents as of 9/27/13.

Voxxel's locations in TomTom + Paste / SDM format:

/way 47.3 80.8 South side of the ramp that leads up to Firewalker Ruins.
/way 55.3 50.3 Under the broken bridge, in front of the Mysterious Den.
/way 63.1 45.3 On a ledge to the west of the pathway in the Blazing Way area.
/way 55.6 59.3 On the top of the hill-spike that connects the upmost pair of Ordon bridges.
/way 50.4 71.7 On the stoned area east of the Everlasting Spritewood.
/way 68.4 60.4 Near the ruined tower on the east as you pass through the bridge from Firewalker Ruins
/way 42.8 55.4 Next to Emperor Shaohao's tribune.
/way 48.0 51.2 On a rock, north side of Mossgreen Lake.
/way 25.0 71.9 Next to the Alliance camp graveyard.
/way 64.5 72.3 On a stump in Croaking Hollow.
/way 55.1 72.9 On the northern slump scraps @ Firewalker Ruins.
/way 33.8 54.5 At the entrance of Celestial Court (arena).
/way 37.7 41.1 On a small rock halfway between the Celestial Court and 3-Breeze Terrace.
/way 39.6 77.8 Next to the broken shrine at Pi'jiu village.
/way 65.4 51.7 On a rock next to the daily quest giver Senior Historian Evelyna.
/way 52.2 62.6 Southeast of Mossgreen Lake.
/way 32.0 61.5 Southwest of Celestial Court.
/way 32.6 32.8 On a rock at the west side of 3-Breeze Terrace.
/way 22.4 38.7 Next to the Horde camp graveyard.