To cover thousands of miles in an instant, Elric had to gather a significant amount of rare ingredients and supplies to perform the complex spell needed to open a stable portal from the Royal Grounds to the edge of the Sacred Lands—and another to return. The spell was intricate, time-consuming, and costly, but he had no other choice. Addison's life depended on it.
With the teleportation portal, their travel time would be cut drastically—perhaps even by half. Still, Elric could only hope he would be able to persuade the Saintess quickly. If she refused or hesitated, there was no telling how long it might take to bring her back—if he could bring her back at all.
Sending a disciple in his place was out of the question. This mission required sincerity and humility, and delegating it would risk offending the Saintess. They were the ones in need of help, and they had to demonstrate that truth with utmost respect.