I've yet to formulate an ultimate all-rounder team for myself, but I've played numerous PvP pet battles so far with Lv.25 pets, and come across many pets and teams.
Here are my list of favourites in no particular order. They can all be caught in the wild, but finding a rare with the right stats might take some decent effort. I've also added my recommended strategy with each:
1. Frog:
- Has both a decent heal, and a damaging ability that snowballs and has a chance to stun;
- I prefer
Healing Wave over
Cleansing Rain, but both are viable;
- Good against Undead pets.
2. Spider:
-
Brittle Webbing works wonders, especially against pets that multi-hit (
Clockwork Gnome), or DoT;
- Pick
Leech Life for sustain, or
Spiderling Swarm for high-damage nuke.
3. Flayer Youngling:
-
Reflection is an amazing ability, but one that you should use carefully. Its 5 round cooldown is very long, and to make the most of it use it to reflect those high damaging skills that take time to charge up e.g.
Conflagrate. If you're up against one of these, you can juke it by using a weak ability or by switching your pet;
- I recommend 300+ Speed at Lv.25, to use both
Blitz and
Kick effectively;
- Also a perfect counter for Dragonkin, especially
Onyxian Whelplings.
4. Scourged Whelpling:
-
Plagued Blood can be amazing when used correctly. Pairing it up with a
Tail Sweep, or other pets with multi-hit or DoT will keep the HP of your team up;
- Try to get one with low Speed, and high Power or HP to double-hit with
Tail Sweep;
- Vulnerable to critter abilities.
5. Aqua Strider:
- Same heal as frogs paired with
Water Pump makes it really dangerous;
- Since,
Water Pump is not a 2-consecutive-round ability, its situational value is immense. You can always be primed for a high-damage nuke, while also ready to heal with
Healing Wave.
6. Crimson Geode:
-
Elementium Bolt, augmented with your 50% or 100% extra damage ability has the potential to one-shot opponents, but is also easy to dodge. If facing this pet, save your invulnerability ability, e.g.
Burrow,
Lift-Off, for when it lands.
- Difficult to use, due to long cooldown abilities, but devastating when used properly.