Damage Retaliator

has a 2 minute CD like all the other Belt Attachments.

Gives u the [spell=321476] Buff, which lasts for 20 seconds and deals physical damage to every enemy that is melee hitting you.
Because the damage is physical, it gets reduced with the enemys armor.

The Backfire is [spell=321503], which increases the damage u take from all sources by 10% for 10 seconds.

in 11 uses it backfired 2 times

An important thing to note about this item is that it removes shapeshift form while activating this item.
I'm not sure how intentional this is, but it's very unfortunate.

Not only does it remove bear form, it also has a global cooldown, making it extremely awkward and almost never worth to use as a druid tank.

Virtually useless in its current form. Has a 2-minute cooldown for 20 seconds uptime (it does start cooling down as soon as you use it, not just after the 20 seconds, but it's still just 17% uptime), does very little damage to each enemy, breaks you out of shapeshift forms, and triggers a global cooldown when you use it.

Oh, and about 20% of the times it "malfunctions" and gives you a +10% damage taken debuff instead (which easily adds up to a lot more than the damage it does, depending on who or what is hitting you).

Might be vaguely useful if you're planning to pull a huge number of very weak enemies and for some reason can't cast a real AoE spell, otherwise don't bother (which is what Blizzard should have done instead of padding the engineering list with this).