Soulnado

The Soulnado is a bright green swirling tornado of tortured spirits trapped between the realms.

History
According to ancient legends and to Li Mei's people, it was believed to be a portal to The Heavens, left behind by the gods and  sealed away in an ancient well-like stone structure in Outworld.

Thousands of years later after the Deadly Alliance took over Outworld, they found that same stone relic and ordered Li Mei's village to build a palace around it. In return for help resurrecting the mummified army of the Dragon King, Quan Chi used his magic to unlocked the mystical vortex from the stone structure then all dead souls and spirits began to appeared the skies and being sucked into the Soulnado from all over Outworld. Shang Tsung tapped into the Soulnado and gains so much souls and energy, and felt that his youth and power returning to him like never before. He has access to an unlimited number of souls to sustain his life force forever. And thus Li Mei's people were right and the legends were true.

Until after Onaga finally returned to Outworld. the two sorcerers then formed with their sworn enemy Raiden, a new alliance out of desperation. But when their combined might against Onaga wasn't enough, the Thunder God then use up all his godlike essence and performed a Hara-Kiri by creating an intense ethereal blast as one last effort. However It not only destroyed everyone along with Shang Tsung's palace. the Soulnado was no more as the portal to the Heavens was closed and all the souls were seperated and set free. But Raiden's sacrifice was in vain as his last attack had little effect on the Dragon King who has the last Kamidogu which is Amulet of Shinnok in order complete his plans of shaping as he sees fit.

Scorpion after being defeated and outnumbered by Drahmin and Moloch, would have torn apart by the souls trapped within the Soulnado if he'd not been saved and brought into the Void by the fabled Elder Gods.