Beastmaster's Hunt: The Crab

Be mindful of what time you choose to start the daily quest - the quest will be forcibly removed from your log and all the drops you accumulated till then will be removed from your bags (thus wasting your 30 commendations) when dailies reset at 3am pacific (=4am mountain=5am central=6am eastern).

Hurray 5.2 and not wasting tokens by not destroying the item at daily reset (pleasant surprise that I noticed as well as Jereth), disregard for now, hopefully forever :)

If you are doing these for the rep and not the Valor, coins or gold; it appears it's only worth doing one of these per day as the quests given by the items don't give any rep and you only get a daily that gives rep for the first mini boss you kill.

A CM has now explained exactly how they are meant to work.

The idea is that with some effort (although we are looking at the drop rates being a bit too low), a player can go farm up the materials to summon one of the 5-person bosses who are then trapped in a cage - and from there everyone can fight it. If there are already animals in the cages there is no need to go out into the field to gather materials to summon another. Everyone can fight the boss and get credit for it (and rep), and killing a boss is a daily, so there's no need to kill more than one.

The entire process should be: someone farms up a boss with a Beastmaster's Hunt quest, everyone fights it together and gets the rep, and you only need to do that once a day.

You only need to down one of them, not all three.

So, you don't even need to do one of them. You just need to hang around the cages waiting for someone to do one, help with the kill, and you get credit.

This quest starts from the item [item=91822], purchable from
[npc=67447] or [npc=67751]. See note below.

For the first part of this quest, you are going to collect 30 [item=91817] from Krasarang Wilds.

The [item=91817] are obtained from [npc=60358] on the island of Unga Ingoo. (47.64, 87.63 -- Southern most island in Krasarang Wilds). There are places to one on one the mobs as well as a few places to pull a dozen at once.
My personal drop rate for these are around 4 in 16 or 1/4 of my kills.

Once you have both items, you'll need to go to the trap location. (56.30 42.04 -- The beach south of Ruins of Dojan). When you turn in the quest, wait. A moment later a Colossal Viceclaw will appear and promptly be crated up. You can now grab the next daily. Beastmaster's Quarry: The Crab.

From here you simply fly back to [npc=67447] (12.66, 62.73) at Domination Point. You will unlock the ability for all Horde members to fight [npc=67439] for the remainder of the day or until it is killed.

NOTES:

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• The item for this quest can be picked up by TWO mobs. If you grab the trap from [npc=67447] (12.66, 62.73 -- the pit, north of the tower) at Domination Point, you can not grab anymore traps off of him that day.
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• If you buy your traps from [npc=67751] (10.77, 53.58 -- North Keep of Domination Point by the large fire), you can activate the quest, then buy another trap. This will allow you to do all three dailies
  
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  • Beastmaster's Hunt: The Tiger
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  • Beastmaster's Hunt: The Crane
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  • Beastmaster's Hunt: The Crab
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  at the same time, but still only once per day each.
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• This quest will expire at 3:00 am realm time. All items, objectives, and quest log information will be stripped from your character at this time.
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• This quest is currently not connected to any faction for reputation. Upon defeating [npc=67439] you will auto-accept A Colossal Victory, which rewards you with 200 reputation with Dominance Offensive.
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EDIT: As of 5.2 items collect seem to stay in your inventory.