Complex sentence: He has apparent control over subspace, a side effect of his ability to induce "emotional warfare" via The Glow, which essentially traps people in their minds with their psychological issues, and using this allows him to literally be inside Ramona's head.
Split into simpler sentences: He has apparent control over subspace, a side effect of his ability to induce "emotional warfare" via The Glow, which essentially traps people in their minds with their psychological issues. Using this allows him to literally be inside Ramona's head.