Whereas most versions of Superman have a weakness to magic, Superboy-Prime has a greater resistance to it; he was able to easily fight off Black Adam during their initial encounter, and was only defeated by Shazam and Black Adam in the New 52 when both of them attacked him by saying their word simultaneously, striking him with far more magical force than even he could cope with. Additionally, most versions are affected by Kryptonite; however, kryptonite from one universe does not affect Kryptonians from other universes. The Krypton of Earth Prime's universe—unlike other versions of the planet—was completely absorbed by its sun, rather than being destroyed and fragments ejected from the explosion which would have created kryptonite, so for some time it seemed that no kryptonite that could affect Superboy-Prime existed. During his battles with the three Legions, however, the "Threeboot" Element Lad is able to transmute the ground around Superboy-Prime into a form of kryptonite that does hurt him. It is revealed that threeboot Element Lad is from Earth-Prime's future.