Bulltron, the Usurper Overlord, marched towards the icy temple in the North, his Viking-like presence cutting through the biting winds. The city, already gripped by the cold, bore witness to an impending clash as he approached the Over River Bridge.

Upon reaching the bridge's peak, Bulltron noticed a figure waiting on the other side at the bottom – the elusive Assassin, renowned for his thieving prowess. Unfazed, Bulltron, hand on his weapon, continued his steady advance.

The Assassin, however, wasn't focused on Bulltron. His gaze pierced beyond, locking onto a distant mage. Dismissing Bulltron with a glance, he pointed accusingly, bellowing, "You!"

Undeterred, Bulltron closed the gap as the Assassin turned sideways and vanished. Simultaneously, a shaman's chant began, casting an eerie haze over Bulltron's arms. The Assassin reappeared, a blur of speed, while Bulltron, tapping into a rarely seen berserker combat move, made the air crackle with the ferocity of his attacks.

The shaman's chant melded with the cold wind, creating a haunting melody as the combatants collided. Blood and violence filled the air, the scent of iron assaulting onlookers. The Assassin, emerging from the blur, reached for daggers embedded in his shoulders, his movements nearly imperceptible.

Suddenly, a stone axe, a traditional Northman weapon, struck the Assassin beneath the jaw. He staggered, daggers scattering. Bulltron, no longer spinning, advanced, bringing down the axe with a force that seemed capable of exploding the Assassin's head. Black pitch smoke billowed from the wound, violently propelling Bulltron backward.

As the Assassin lay on his back, an unsettling transformation unfolded. Rising to all fours, he expanded, growing into a dragon of immense size. Yet, what set him apart was the lore – a black dragon with crimson cracks. Inhaling deeply, he unfurled colossal, pitch-black wings, their span eclipsing the bridge.

With a thunderous exhale, the dragon unleashed a torrent of fire, smoke, cinders, brimstone, and sulfur, engulfing everything in darkness. The smoke dragon ascended, leaving behind an abyss of shadow as the world plunged into obscurity.