Bloodknight Antari

Attached is a strategy to 2-pet this trainer in 5.2 Granted, he only gives a few thousand experience, so it may not be worth it, but if you're going to kill him for his bag, you might as well snag the experience in the process. The strategy is partially written so as to maximize the speed of the fight as well.

1) Enemy will start with his arcane worm. You should start with a [npc=48609] with Metal Fist, Repair, and Build Turret. You likely won't use Repair, but it does provide a safety backup incase you get really bad RNG.

Against the first pet, you should spend the first turn using Build Turret, then Metal Fist Twice, then Build Turret again (i.e. as soon as it comes off cooldown). If no Metal Fists missed, you can move onto step 2; if one missed, do an extra Metal Fist to make up for it.

2) Swap in [npc=61088] (the enemy worm will still be alive) or some pet with the same abilities. You'll need Poison Spit (this ability matters very little), Cleansing Rain, and Pump. Spend your first turn casting Pump and your second turn cast Cleaning Rain. If everything went correctly, the Turrets will actually finish off the worm on this turn. If it's a turn early or late, that's not a big deal; if the enemy is still alive after this point, just Poison Spit it once to kill it (if that's not enough to kill it, you did something wrong), and if the next enemy comes out early, it's not a big deal either.

The enemy fire elemental will come out. Hit it with Pump and it'll either die or be very close to it; a left-over turret might even finish it off. Finish it off with Poison Spit if it didn't die.

3) The enemy dragon comes out. Cast Poison Spit on it once (it's just worth the damage). Swap in your low level pet. Attack once, then swap in the Clockwork Gnome again.

At this point, it should be an easy win since the damage output is really low against your Gnome, and you have Repair for emergencies. This is the method you want to follow (purely for speed purposes):
- Do not simply use Build Turret on cooldown.
- If the enemy has Soul Ward off cooldown and you don't have a Turret down, use Build Turret.
- If the enemy uses Phase Shift (his 100% dodge ability), on the next turn, when you would be guaranteed to miss anyway, use Build Turret; this prevents you from wasting the turn.

The funny thing is that the Gnome completely demolishes this enemy. The Gnome takes reduced damage and can heal. Furthermore, Turret will break through his Soul Ward, making it as close to worthless as possible; the Soul Ward essentially only absorbs 40 damage. You want to keep up a Turret at all times he might Soul Ward as you waste a lot of time having to use a full turn's attack to break it.

Bloodknight Antari - Shadowmoon Valley – Level 24
Quickteam List - Dragonkin, Aquatic, Humanoid
Pet 1: Arcanus – Magic – Use Dragonkin
Pet 2: Jadefire – Elemental – Use Aquatic
Pet 3: Netherbite – Dragonkin – Use Humanoid

If you purchased a [npc=71488], level him to 25. He takes a big, leafy dump all over this guy's team. I swap in two low level pets against Arcanus, and providing they aren't one shot, the Ancient takes care of the rest of the team. Just keep up Sunlight and Photosynthesis, and spam Ironbark. The damage reduction from Ironbark, coupled with the heal, will negate virtually all the damage his pets deal.

Edit: Having done this quite a few times now, I've found it best to start with the ancient and put up sunlight and photosynthesis first, then swap in the leveling pets. Doing so allows him to gain 400+ health while sitting on the backline. Otherwise, his fire elemental can get you dangerously low, especially if he gets a lucky crit.