Because they need another scroll, and because Kabuto is alone, Sasuke believes that defeating him would be their best chance to finish the second phase. Since Sasuke paid him a courtesy by explaining this instead of outright attacking him, Kabuto offers an alternative. Other teams that are just now finishing are heading for the building in the centre of the Forest of Death with a false sense of security and tired after four days in the forest. If Team 7 waits near the building, they may be able to take a scroll from one of these teams. Kabuto accompanies them to the building but finds that they are trapped in a genjutsu, victims of another team with the same idea.