Hm, maybe, but Lexaeus does rip up earth to protect himself, and it wouldn't take long for him to be vastly stronger than Myifee. Once he's got enough power, Lexaeus would utterly destroy him, It's a question of can Myifee kill him before then.
Which is why i side with Lexaeus, Staying alive long enough with his powers of Eath wouldn't be that hard. Esecially since he could just cause an earthquake to buy enough time...