Was thinking of this randomly, just a pure one-shot ideal here! I have no idea if Blizzard/Activision has this planned, but I just thought it'd be cool to share!
Location: Sepulcher of the First Ones
Zovaal watched with amusement as Bolvar clashed with his dominated servant, Anduin. His former servant, Sylvanas Windrunner, was busy shooting down his mawsworn servants, as the other heroes did their best to support Thrall and Jaina.
"You really have no chance." Zovaal's voice boomed as he released a wave of domination energy, chaining down many of the heroes while killing more of them.
Jaina and Thrall were hard pressed against the forces of Mawsworn with the little help they had before they too were in chains. Bolvar grit his burning teeth, clashing hammer with Kingsmourne by Anduin.
"Sylvanas! Grab the heroes and get the other four covenant leaders!" Sylvanas went to move before Bolvar yelled, the hammer he wielding being cut in half as he slashed across the chest by Kingsmourne.
"Now, hope will die. The reign of the First Ones are at an end." He summoned an orb of domination magic before shooting it forward. Bolvar grit his teeth and closed his eyes, accepting his fate.
Sylvanas narrowed her eyes before a golden, almost transparent hammer flew at the orb and demolished it and pushing back Anduin towards the Jailer. Her eyes widened as the chains faded from the heroes, Thrall and Jaina.
(Insert Hail to the king by Avenged Sevenfold, approx. 3:47)
The hammer laid on the ground by Bolvar who was panting. Zovaal narrowed his eyes. "You… I thought I had gotten rid of you." Anduin's eyes, the little bit of humanity left in him, widened slightly. ("There's a taste of fear")
Jaina dropped her staff, covering her mouth as Thrall's eyes widened slightly. "H-how? I thought he was slain…." ("When the henchmen call") Sylvanas, struggling with her reunited soul, looked at the figure in shock. "H-he was… he's back though."
("Iron fist to tame the land") "Lad…." Uther said somberly with remorse. The figure had a black and gold cape, matching armor to boot as it seemed to clash against one another. Half of his hair was white, the other blonde. He gripped the shaft of the hammer and slugged it over his shoulder. ("Iron fist to claim it all") The figure's face was shown as he smirked. "Bow… before your king."
Jaina finally uttered out his name. "A-Arthas…" "It's been a long time… Jaina…" He uttered, staring straight at Zovaal.
Since it's been a bit since I posted, I figured I'd put this little excerpt in to satisfy some people. Hope you enjoyed it, even if it was short!