Can anyone explain how this happened?
Can anyone explain how this happened?
I dont know
Charge of the Aspects
There you have the lore behind how Thrall was able to use the powers of the Aspect of the Earth.
"During the first attempt to mend Nordrassil, Deathwing's servants had ambushed Thrall and sundered his mind, body, and spirit into the four elements—earth, air, fire, and water. Through the work of a mortal hero and Thrall's mate, Aggra, he had been saved. Ever since that time, Thrall had displayed a newfound connection with the earth that went beyond mere communication with the elements. He could feel Azeroth as if it were a part of himself, conjoining with the world in a miraculous way. Ysera believed that in the process of reforming his spirit, the essence of Azeroth had been taken into him."