Underworld Cage of Ysalamiri
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The Underworld Cage of Ysalamiri was a guerilla tactic of the Zann Consortium, used to prevent Jedi or Sith from using the Force. To do this, they would fill a metal cage full of Force-repelling ysalamiri, and whenever a Jedi or Sith got near to the cage, they would be unable to touch the Force due to the ysalamiri inside, which would create a Force-repellent bubble.
