Yeah that right i think i have no idea im so dumb
The author Mary Shelley use the word chimerical in that line because she said that the powers of Cornelius Agrippa were improbable and because she wanted to say this in a fancy way.
Hope this Helps :)
BTW, Mary Shelley is the author of Frankenstein <span />
Answer:
Metaphor
Explanation:
Comparing the kid with Eisenstein without using like or as