Note: Requires 1 Hunter & 2 Mages
In phase 3 on Mimiron there are bomb bots that goes after a target and when they reach it they hit for 25K and everyone in a 5 yard radius. Want to remove that damage from the raid? Easy, here's what you do.
Your duty as hunter is to dps the head, you have your pet on defensive. Every time he spawns a bomb bot you quickly target the bomb when it's falling to the ground (I recommend having enemy HP bars visible for easier targeting here) and send your pet on it. Now, here's the trick. You will have 2 mages doing a frost nova rotation when it lands. One frost nova per bomb bot, the cooldown is too long to only have 1 mage (Not sure if Icy Floes reduces cooldown enough if you only have 1 frost mage). Why the Frost Nova you ask? Well, what happens when a mob is in a frost nova? He targets the nearest enemy, which in this case is your pet. And BOOOM, it explodes just seconds after it spawned, far away from any raid member. With 75% avoidance, your pet survives and everyone's happy.
When it's exploded, your pet goes back to standing below the head since it's on defensive, just waiting for the next bomb bot to spawn. Wash, rince and repeat.