The moment Totto opened that portal everyone felt a deadly aura assaulting them. There was a black wind that covered the portal and did not allow a good view of what was on the other side, but that did not diminish the fear it provoked.
When they saw the place where the portal connected, even the two strongest of the group, Nero and Heinz, felt threatened by it and did not dare to get closer.
The Reaper's scythe created a portal that connected to a place that is known through the universe as the blackest night, the heart of darkness, and the hunger that devours souls.
The Lich managed to create a ten thousand meters wide portal to the plane of death, the Negative Energy Plane.
Gate to the Underworld was a spell Totto created based on the Rank 4 runic diagram he obtained from Zatiel. It was incredibly difficult for the Lich to perform it, and it was only when he channeled his power through the Reaper that he was able to achieve it.