Yu-Gi-Oh! GX Episode 170: Saiou Returns! Activate the "Decisive Power of Absoulte Destiny"!!
Episode 170 of 180 of Yu-Gi-Oh! GX, aired January 16, 2008, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Sartorius saves Jaden from Trueman and tells him important news: the dark emissary is going to attack the Duel Academy. However, Sartorius suddenly corners the boy and challenges him to a duel, rendering him unable to summon monsters with his combo of Arcana Force 0 - The Fool and Tour of Doom.