I posted this idea in the Paladin possibilities thread as a way for other jobs to help tanks maintain their position in this crazy enmity world, but it didn't get any comments. Feedback is welcome.

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One of the main areas in which Beastmasters excel is turning monsters against each other, making use of their predatory instincts (food chain).

New Job Ability: Mask Scent
Level 40 (usable as subjob)
Duration: 5min Recast: 10sec
This ability lets you manipulate the instincts of enemies with the pheromone scents of predators and prey.
* Targetable on self, alliance member, and pets.
* Requires new consumables. (a drawback, considering inventory limits)
* The effect can be removed with Deodorize or changed by another scent.
* Cannot target enemies to change their monster family.

These Scents/Pheromones have several effects:
* When trying to charm, using the same scent as the target will make charms more successful and last longer.
* Masking your scent allows you to avoid any type of aggro (even true sight/sound aggro) from the same family as the scent you're using. (blend in)
* In battle, using same scent as the target increases enmity, like rivals marking their territory.
* Mask will give the target a separate effect: the killer trait against the prey's family.
Predatory monsters will intimidate someone effected by their prey's scent.
Using the target's predatory scent will lower enmity. (wants to run away from you)
* Killer traits will: Add 5% damage against prey, Add 5% accuracy against prey, Reduce 2.5% damage from prey.
Direct <> enemies only deal 2.5% more damage to each other, and add 5% accuracy against each other.

The effect of the job ability could either be based on the scent in the ammo slot, like Call Jugpet
OR
There could be separate "Mask spells" like Ninjutsu, which simply require the tools to be in the Bst's inventory.

The "Scent" effects go by the "Food Chain" chart:
Plantoids > Beasts > Lizards > Vermin >
Amorpha > Birds > Aquans >
Dragon <> Demon
Arcana <> Undead
Lumorian <> Luminion

Consumable items (quiverable, stacks of 99) would be needed to work with all encounters with beasts.
Basic items:
A vial of <family> Scent (All jobs)
HQ would create more potent effects, both in enmity increase/decrease and intimidation rate:
A vial of <family> Pheromones (Bst Only)

The use of this ability, in relation to party play would be:
* Use "Same" family scent on the tank. This would increase enmity.
* Use "Predator" family scent on the other members of the party, granting them the killer effect and enmity down, both very useful.
* Using the "Prey" scent would be very problematic for the group. (don't do it)

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This idea for Beastmaster is primarily for party play, but has many solo uses as well. I'm curious about what Beastmasters would think of this. (I think it would be a unique job ability that is truly useful.)