Seeker Zusshi

1: Anubisath Idol (1,1,1)
2: Emerald Proto-Whelp (2,2,1)
3: Carry pet

vs Diamond
- Sandstorm > Deflection
- From here on, cast Deflection when Diamond has Howling Blast off cooldown, Sandstorm when off cooldown, Crush as a filler

vs Mollus
- Switch to Emerald Proto-Whelp
- Proto-Strike > Emerald Presence
- From here on, cast Proto-Strike when off cooldown, Emerald Presence when there is 1-turn left on your buff, Emerald Bite as a filler

vs Skimmer
- Emerald Bite until your Emerald Proto-Whelp dies
- Switch to Carry pet > switch to Anubisath Idol
- From here on, cast Deflection when Skimmer has the Pump buff, Sandstorm when off cooldown, Crush as a filler

Seeker Zusshi is one of the six Grand Master Pet Tamers you need to defeat as part of Battle Pet Tamers: Pandaria.

His pets are:

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• [npc=66926] - a level 25 [npc=40198] (1850 Health / 280 Power / 280 Speed), with the abilities [petability=414], [petability=416], and [petability=120]
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• [npc=66925] - a level 25 [npc=64352] (1657 Health / 280 Power / 311 Speed), with the abilities [petability=449], [petability=369], and [petability=564]
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• [npc=66923] - a level 25 [npc=64633] (1657 Health / 280 Power / 311 Speed), with the abilities [petability=230], [petability=297], and [petability=497]
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Counter his Elemental / Critter / Aquatic team with Aquatic, Beast, and Flying pets/abilities respectively.

The other Grand Master Pet Tamers you'll need to complete the quest are:

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• Hyuna of the Shrines in The Jade Forest
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• Farmer Nishi in Valley of the Four Winds
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• Mo'ruk in Krasarang Wilds
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• Courageous Yon in Kun-Lai Summit
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• Wastewalker Shu in Dread Wastes
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My strategy for this guy, in case anyone finds it helpful:

Pet 1: A snail with Absorb, Shell Shield, and Dive. I'd go with a H/P Shimmershell Snail, but the Silkbead Snails and Rapana Whelks in Pandaria will do nicely; just avoid speed breeds if you can.

Pet 2: Any flier with Cocoon Strike/Lift-off should be able to do the job. A Jade Owl is ideal in case things go really wrong, but is unnecessary.

Pet 3: Your leveler. It'll take a little bit of Elemental damage in this fight, but it won't face much risk here; bring just about anything and you should be fine.

Start with your Snail and begin with Shell Shield, then use Dive. This part is pretty mindless: use Dive on cooldown, reapply Shell Shield when it has one round left, and use Absorb otherwise. Even with bad RNG, Diamond should go down with little trouble.

When Mollus comes out, start with Absorb, then reapply Shell Shield, then go on using Dive on cooldown and Absorb otherwise. I suggest the Pet Tracker add-on so you know when Dive comes off cooldown, so you know to use the opportunity to reapply Shell Shield. With Shell Shield, your Snail should outlast his.

When Skimmer comes out, switch to your leveler, use whatever attack you feel like, then switch to your flyer; this way, your leveler should soak the Soothe and put your flyer in just in time to avoid Pump. Of course, when your flyer comes in, Skimmer should have just set up Pump, so Cocoon Strike/Lift-off to avoid the attack portion, and just burn it down afterward with whatever flying attacks you have.