Tarr the Terrible

Here's a guide to using two easy-to-obtain pets to defeat this team. Using this method, you can carry low-level pets and power level them. The beauty of these pets are that you don't have to go hunting for a particular breed for this to work!

You will need a level 25 [npc=34770] and a level 25 [npc=45340]. The third pet can be level 1 - it takes no damage! I have tested this with my [npc=34770] upgraded to a rare with [item=98715] (now available for 15 [item=116415] from [npc=79858] (H)/ [npc=85418] (A) in your [building=42]). As such, I would recommend you do the same.

Here is the setup you want to run:
Slot 1 - [npc=34770] : [petability=648] | [petability=212] | [petability=1093]
Slot 2 - [npc=45340] : [petability=648] | [petability=611] | [petability=649]
Slot 3 - [Carried Pet]

Enemy Team Summary
[npc=87976] : [petability=1099] | [petability=1106] | [petability=1101]
[npc=87975] : [petability=169] | [petability=350] | [petability=172]
[npc=87972] : [petability=111] | [petability=158] | [petability=761]

Strategy
The combo of [npc=34770] and [npc=45340] really shines in this fight, with plenty of undead damage along with healing to make things go smoothly.

Gladiator Murkalot - Part 1
Murkalot always starts by using [petability=1106]. You in turn want your [npc=34770] to use [petability=212]. Murkalot will then switch out for Gladiator Deathy.

Gladiator Deathy
On turn 2, use [petability=212] again. You will be essentially leeching off of two enemies for a few turns. Next, on turn 3, use [petability=1093] - Deathy will use [petability=172] that turn. On turn 4, Deathy will interrupt your [petability=1093] with [petability=350]. You'll be stunned, so just pass for turn 5. Re-apply [petability=212] to Deathy after that, then use [petability=1093] again.

After 1-2 rounds of [petability=1093], Deathy should die, at which point Gladiator Murkalot comes out. If for any reason Deathy dies early, simply advance to instructions for Murkalot below.

Gladiator Murkalot - Part 2
When Murkalot comes out (again), you will usually still have 1-2 rounds of [petability=1093] left, which will take care of the [petability=1101] when Murkalot uses it first turn. If you are not already in the process of [petability=1093] (i.e. Deathy died early), use it now.

At this point, Murkalot then uses [petability=1106], which will probably kill your Marionette. When your pet resurrects (the Undead pet ability), use [petability=1093] again if you are not already in the process of doing it. This will eliminate the [petability=1101] shield on Gladiator Murkimus, who will be switched in at this point.

Gladiator Murkimus
Now that your Marionette is dead, select your low level pet to switch to. Without using any abilities, immediately switch to your [npc=45340]. The first ability you will use with this pet is [petability=649]. Next, Murkimus will fly into the air for the first part of [petability=761]. This is the point where you heal up with [petability=611].

The rest of the fight simply involves using [petability=648] over and over, and [petability=649] if there is more than one enemy pet still alive, till you kill both remaining pets. Your fossilized hatchling may die, but the undead ability ensures that it is around for one extra round to wipe up the enemy team.

There you have it!

My team:

Fossilized Hatchling: (1):Bite; (2):Ancient Blessing; (3):BONESTORM
Blighthawk: (1):Infected Claw; (2):Ghostly Bite; (3):Lift-Off
Unborn Val'kyr: (1):Shadow Shock; (2):Curse of Doom; (3):Haunt

I didn't use the Val'kyr at all, just had her as backup.
1. Start the battle with the hatchling's bonestorm into ancient blessing into bite until bonestorm is off cooldown again, repeat until it's dead.
2. Finish rest with Blighthawk

Maybe I got lucky this time, but it was really easy this way.

None of these worked for me. It was either out of date or I didn't have the pets. I googled it and got this from Xu-Fu's site!
https://wow-petguide.com/index.php?Strategy=3

Unborn Val'kyr
Skills: 1 * 1
Breed: Any

Fossilized Hatchling
Skills: 2 1 2
Breed: Any

Any Level 1+ Pet

Turn 1 Haunt
Bring in Fossilized Hatchling
Turn 1 BONESTORM Gladiator Murkalot switches with Gladiator Deathy
Turn 2 Ancient Blessing
Turn 3 Swap to your Level Pet
Turn 4 Swap back to your Fossilized Hatchling
Turn 5 BONESTORM - killing off Gladiator Murkalot in the back row
Turn 6 Ancient Blessing
Turn 7 Bone Bite
Turn 8 Bone Bite Killing of Gladiator Deathy
Gladiator Murkimus comes in
Turns 1+ Use Ancient Blessing on cooldown and otherwise Bone Bite until your Fossilized Hatchling dies.
Bring in your Unborn Val'kyr
Turns 1+ Shadow Slash until the fight is done!