Harkening back to the OS3D days, we just did Heroic Chimaeron with a warlock pet tank for the double attacks.
When the boss gains the Double Attack buff our warlock pet tank would taunt the boss negating that part of the encounter. The pets taunt worked like a true taunt as far as we saw. When melee got too close to the pet with caustic slime there was a chance the pet could potentially miss the taunt resulting in a tank having to eat it.
Enjoy making the fight easier!
ps: this is what part of the alphabet looks like without q and r.
pps: sorry if this is a repost I didn't see one when i searched.