Because Hyde is becoming more powerful and starts taking over his body, Hyde represents his evil side and Jekyll doesn't want to be consumed by him.
Assonance was “Wanda the witch wouldn’t wake up”
Line break was “Paragraph in poetry”
Alliteration was “Blue fell blew. A crow chittered throatily. The stopped. We continued to breath.
Stanza was “Jack was quick to look under his desk”
Consonance wind was “Margo’s old kohl coat was back in vogue”