Unlike the proud figure Rex remembered, Kael'thas now wore a troubled expression. His entire bearing had changed, leaving him looking exhausted, though his blood-red Sunstrider mage robes remained as vivid as fresh blood.
"Rex, I need your help." Kael'thas pushed aside the door curtain and entered the room. The moment he saw Rex, he spoke without delay.
"No problem. As long as it's something I can do, you can count on me." Rex sounded generous, but he had left himself room to maneuver. The key lay in the words "something I can do." He had no idea whether Kael'thas caught that qualification. In any case, Kael'thas looked delighted and immediately explained why he had come.
"The Golden Crystal. I need its power to purify the Sunwell," Kael'thas explained.
"Purify the Sunwell? Surely the Golden Crystal can't do that?" Rex asked hesitantly, doubt showing on his face. What was the Sunwell? An immense field of energy, containing enough power to let High Elf mages unleash the mysteries of magic without end. Thanks to the Sunwell, High Elf magic was generally much stronger than that of human mages. No matter how far away they were, they could feel its power and use it to strengthen their magic. To Rex, the Sunwell was a buff that empowered every High Elf mage.
Rex simply could not believe that an energy field of such magnitude could be purified with the Golden Crystal alone.
The Golden Crystal was rare, and its holy power was scarcely matched anywhere in the world, but it was not unique.
Out of consideration for Kael'thas, Rex did not reject the idea outright. He left some room for possibility. After a pause, he looked at Kael'thas, took his exquisite box from his Spatial Ring, and offered it to him. "If the Golden