Odojinya was a Sith spell, a dark side web creation. This magic technique was a preferred method of Sith sorcerers. If successful, this ability manifested as threads of dark side energy, encircling and trapping the target within an inescapable network. The dark energy framework would then sever the individual's bond with the Force, while also constantly draining their power.
Ommin, the King of Onderon, utilized this power to overwhelm Arca Jeth, a Jedi Master.