I'm on a higher plane, I'm destroying em' while I build them
Kweli is owning other rappers while at the same time continuing to rise above the rest by building his “plane”.
Also, “a higher plane” could be a reference to geometry where planes can arise as sub-spaces of some higher dimensional space. Thus, he creates a sub-space of his music while destroying others. In short, his skills are on a higher level.
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