Hello everyone,
This is a very simple exploit, and as of right now I believe only two hunters know of it on Ragnaros.
What you need:
Big Love Rocket - mount
Basically, if your pet dies and you use the big love rocket, your pet will be revived with full hp when you dismount again.
You can donate for this mount, but molten always makes it available with vote points during Valentine's day, so start saving them.
Again:
1. Pet dies
2. Mount big love rocket
3. Dismount
4. Pet is alive with full health
Cheers,
~Boomkin