Terrifying Presence

Diablo, Lord of Terror and now Prime Evil had been whisked off to this unknown world almost immediately after his plan had come to fruition. Centuries of planning, carefully manoeuvred pawns, and predictions on the future based on his extensive knowledge of Sanctuary's prominent people had all potentially gone down the drain... Yes, he'd manage to steal his sibling's powers and reform into the Prime Evil with his personality intact, but, that would all be for nought if he was unable to leave this realm and follow through on his promise to that Boneheaded Imperius.

Some unnatural "thing", had managed to take him unawares and transport him to somewhere that didn't resemble anything he knew. He'd just gained his powers and was still pretty weak due to his body still acclimating to them. Whether he liked it or not, this was not his body... It was his human offsprings, and it would take years for him to finally snuff out their consciousness and claim it as his own.

Fortunately, his faithful servant Adria had done everything as planned, birthing the child and allowing them to meet with Deckard Cain. The last Horadrim had foolishly taught his vessel everything Diablo and Adria needed to complete the ritual, without that knowledge it would have been impossible to keep his sibling's personalities in check.

Diablo chuckles to himself at that thought, the thought of the sacred rituals the Horadrim used to seal demons would be used in the creation of the Prime Evil filled him with smug glee.

Adria had also been whisked away and had landed relatively close to him, only a few miles away in this monster-infested land. He'd quickly sent her out to scout the surroundings, tell him of the creatures and other inhabitants of the lands, and update him if anything should change.

As she was doing that, Diablo started to focus inwards on himself to get comfortable in his body... The advances his strength, speed, endurance, and magical might had been significant... Too significant. Every movement he made would throw him hundreds of meters in the wrong direction, every twitch his muscles made would cause the wind around him to stir, every breath he took caused steam to form in the air, and his mere presence caused lesser beings to simply die from shock.

He was still contained within his human vessels body, corrupted as it may be, he'd probably need an outside influence to shear this disgusting human flesh from his body and reveal his true form. Regardless, if he could not have Sanctuary, Heaven, or Hell, he'd claim this world as his own.

Adria had come back in a hurry, spouting things about strange Immortal masked creatures, a city of gold, and annihilation of Diablo himself... She must've used dark magics to scry on the situation, as Diablo was obviously still alive.

She made it clear to him that there were apparently beings in this world superior to himself, a poor joke if it is one. He simply couldn't comprehend what could be more powerful than himself right now, with the exception of Heaven and all the Angels combining to form something similar to the Prime Evil.

Ignoring her words, he commanded her to find Tyrael and the Nephalem that'd likely followed them here, while he wouldn't admit it to anyone, he feared their potential... He'd felt the ripples given off by Uldyssian, and knew that had they survived the war between Heaven and Hell would've been settled by now.

He also wished to get a jump on them, as they'd try to find and kill him if given the chance.

It'd been a week since Diablo had arrived in this world, and he'd been very productive... He felt the connection with his body growing stronger, as well as his ability to utilise it to the fullest.

That hadn't been all he'd done though, he'd started his experiments again, previously, corrupting living beings had been a pain, the methods of doing so were long and arduous while also requiring many valuable materials... His new body and power provided an opportunity however, his blood giving life to the mutation he wished for without all the effort he'd previously have to put in.

He'd first started with rats and birds, covering them in it and forcing them to drink it... Sometimes he'd accidentally give too high a dose and cause them to melt, combust, instantly die, turn inside out, and explode... Some doing multiple at the same time in random order.

Eventually though, he'd mastered this technique, creating half-demon hybrids that had the lust for battle, scales, and strength his race was known for. He'd experimented with many of the monsters inhabiting these lands, but the things he was most proud of had to have been those winged lizards.. Truly, they were a marvel, he'd never found a creature so compatible before.

His new-found appreciation for these majestic creatures led him to trying to find their breeding grounds and homes with his upgraded Demon Dragons. With their help it was extremely easy to subjugate them, capturing the adolescents and adults while stealing their eggs to modify the creatures further

There were a few that'd managed to escape his wrath, but he'd let them go as they'd breed more Dragons for him to experiment on in the future. Afterwards, he'd decided to make the mountainous dragon nests his temporary home, it provided him with protection and many defensive advantages over whoever would attempt to attack him and his "children".

Not long after this all, he received a message from Adria... The Nephalem were on the move and heading right towards him, he quickly used his connection with his creations to spy on them, tracking their every movement and sending out probes to investigate their strength... He was not impressed.