Spider Riders Season 1 Episode 42 Bad Omen ( Air Date 2007-06-11 ) Genre Action & Adventure, Sci-Fi & Fantasy, Comedy, Animation category. Overview "Mantid, with two Oracle Keys in his possession, creates a cannon capable of attacking Arachna Kingdom. Hunter and Corona sneak into Mantid's fortress to disable the cannon while Beerain discovers Mantid's true plan - to take all of Oracle's power for himself and with no intention of bringing sunlight back to the Invectids' land.".