I've saved probably the easiest of the Spirit tamers for last. And it's also the one with the coolest view, as long as you're not afraid of heights:
My (slightly older) computer really doesn't do it justice, but this perch really makes sense for a Whispering Air Spirit. It's still hard to get to, but some times you just have to stop and smell the (virtual) roses.
Meet the Tamer
Again, these guys are like alien invaders or something! They've got nothing to talk about except how cool it is to experiment on the native wild life. Considering how much fun the spirits were in the new Pandaren starting zone, it's kind of a let down. Oh well, at least the pets look cool!
Dusty is a Moth
crossed with a critter . Unlike a Wolpertinger, which has a mix of Flying, Critter, and other abilities, this guy just does Flying damage.
If you've fought a Moth before, you know how annoying Cocoon Strike can be, but his additional speed debuff from Moth Balls makes it very likely that you will always be slower than him. This can make it harder to keep your rotation going. Fortunately, his abilities all have cooldowns, so there is at one turn in his rotation where he just sits there and lets you hit him.
The best pet to use against him is a Dragonkin with a Magic attack, though any Dragonkin with a heal (or a shield ability) will be equally strong. If you can time your hard hitting abilities around the Cocoon Strike, then almost any pet with a Magic attack should do well against him.
Whispertail is a Dragonkin that does Flying damage. I can't say I've seen very many of them before. That being said, all of his attacks are just normal Flying attacks. Stick a Dragonkin or a pet with Humanoid damage on him and you should be able to weather the storm.
Pandaren Air Spirit doesn't hit very hard, but it has a strong heal and can outlast your pets. Especially if you have any weather effects that boost healing. But again, 100% Flying damage, so just stick a Dragonkin with a heal and maybe Tail Swipe and you're good to go.
In summary, this fight is easy if you have one or two Dragonkin, especially ones with healing. The Tamer's first pet can be the most frustrating, but if you time your abilities right, it can be taken down without too much trouble. The rest are just easy mode as long as you have anything that matches up with them. Use Aquatic pets carefully, though.
So yeah this is pretty easy. Open with your leveling pet if it has enough health to take one good hit, otherwise save it for the last pet. Bring any two good Dragonkin and run it like any other fight! Good choices are: Spawn of Onyxia, Emerald Proto-Whelp, Nether Faerie Dragon, Celestial Dragon, &co. If you're unsure of your choices or want to try something new, you can pretty much solo the fight with an Emerald Proto-Whelp using Emerald Presence and Emerald Dream, so bring that along as a safety net and test away!
I had fun writing this guide and I hope it was fun and maybe helpful for you all to read it. Feel free to comment or contact me, and I'm sure I'll have more to say about pet battling very soon! Happy Hunting!