In the northern wing of the Witch Palace, Jacob stood in front of another blue portal, reading to depart for the trial plain, which was going to descend in a few minutes.
Since this was his primary objective, it was impossible to delay, and he didn't want to lose control of his body either. So, he willingly decided to move out.
As for this portal, it didn't lead anywhere near the Vile Witch Valley. In fact, Jacob found that the witch palace wasn't even located in the Vile Witch Valley but hidden somewhere in the neutral plains closer to the coastal line.
These portals are made with a unique rank runic array called the Space Portal. Space Portal required a Great Elder Rune Artificer, a rank higher than the Elder Grandmaster, to make this array in two specific points before connecting them with their unique array signatures.