The Union of Fireboy and Watergirl

INTRODUCTION

When the fate of the world is at stake, so is the elements of the world. Such is the way how nature works. The fight between The Lich King and blood elves caused so much disturbance within life and death that it ultimately led into fire setting everything ablaze and oceans flooding out of control. Elementals feel broken, grieving over the things they have lost. Thus, a fireboy and watergirl had to step in to restore what the world was before the aftermath of war.

GAMEPLAN

Under the leadership of Neptulon, a pact was formed between Jaina and Ragnaros. The trio has so much to do, let's not waste any time to help them out. Are you willing to help them out, fellow adventurer?

First things first, it's important to stop the plague spreading. You can burn the existence of plague with Ragnaros and his bird, Jan'alai. His subordinate Mordresh alongside a Reckless Apprentice with Wildfire will help them out along the way. Then, you can snuff it out with Jaina and her two servants.
These three soldiers are under orders from Brann to search for lost Elementals. Strangely, when they were affected by Potion of Illusion, they can hear out any echoes of hurt Elementals even if they are far away.
It's important to heal up the wounds. Jaina and Reno are very good at medicine. While under the influence of Jaina, Ragnaros and Jan'alai can mend the wounds by ablation. Then, Neptulon and Firework Elemental can cover them up with bandages.
Hex Lord Malacrass with his banker can bring up endless supplies. Emperor Thaurissan can manipulate the overload, should it be too much for the union.