A Worthy Weapon

Strange women lying in ponds distributing swords is no basis for a system of government. Supreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony.

The [object=194213] grows from ice on the Ironwall Dam and the Decrepit Flow in northwestern Crystalsong Forest. Pick four of them and go to Drak'Mar Lake, which is in northeastern Dragonblight on the border with both Grizzly Hills and Zul'Drak. Go to the middle of the ring of floating objects and use the hyacinths. The [npc=33273] will appear and after a short dialog, the [object=194238] will spawn next to her. Loot it to get the completion.

This quest, along with The Edge Of Winter, and A Blade Fit For A Champion, is one of three weapon-fetching dailies available to Argent Tournament Aspirants and Valiants. Each faction has its own version, though they're identical aside from the specific quest NPC. This particular quest is for Sen'jin Valiants. The other versions are:

Aspirants:

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• Alliance
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• Horde
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Horde Valiants:

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• Orgrimmar
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• Silvermoon
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• Thunder Bluff
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• Undercity
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Alliance Valiants:

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• Darnassus
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• Exodar
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• Gnomeregan
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• Ironforge
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• Stormwind
• 
  

The actual quest is rather simple, you just read the quest and it'll tell you where you need to be.

Hyacinths grow only on the ice flowing from the Ironwall Dam, on Crystalsong Forest's northwestern border with Icecrown, on Crystalsong Forest's northwestern border with Icecrown. Gather the flowers and take them to Drak'Mar lake in northeastern Dragonblight, near its border with Zul'Drak and Grizzly Hills.

You just head to The Decrepit Flow in Crystalsong, and on the ice in the water and around the wall you can find flowers to gather, you need 4.

Then you just head to the Northeastern corner of Dragonblight, just above the Naxxramas (when looking at the map) and in the middle is a ring of flowers. use the flowers you gathered and some lady will pop out of the lake and you can then pickup the sword.