Although the Tome of Wisdom and the Lesser Rune of Dispel were precious, they had appeared before. What truly caught Rex's attention was the green Crystal Ball.
Rex took everything except the Lesser Clarity Potion. Holding the glowing green Crystal Ball, he turned it over and over in his hands, a rare smile appearing on his face. He had worn a gloomy expression all this time; getting him to smile was no easy feat.
[Crystal Ball: The bearer can view any area within a hundred li. Reveals invisible units.]
This was a strategic treasure of immeasurable value. Although it could not increase his strength, a treasure that let him track the enemy's movements at any moment was invaluable in battle. Every move the enemy made would be laid bare. Put simply, with the Crystal Ball, Rex had a god's-eye view. Commanding a battle from that perspective might not guarantee victory, but it certainly gave him a commanding advantage.
By the time Rex opened his eyes, it was broad daylight. He extinguished the magical light in his tent and silently recited the words in his mind. Light flashed, and the green Crystal Ball appeared in his hand. It was perfectly clear, without a trace of impurity inside. Rex immediately used it to lock onto a location.
Slowly, the clear Crystal Ball began to brighten. Dark silhouettes appeared within it, sharpening after a few seconds. Smooth, fine skin with a healthy wheat-colored glow, hair that rivaled the radiance of the silver moon, and long, pointed ears revealed the subject's identity: a beautiful high elf. Although her face was expressionless, the image within the Crystal Ball still radiated her pride.
She had noticed nothing. Even with her Hero Rank strength, Sylvanas remained completely unaware of the Crystal Ball's surveillance. Rex marveled