This isn't Arts it's writing, but the answer is: It is an incomplete sentence because there is no subject to go with the predicate.
Answer: Hyperbole
"With love's light wings did I o'erperch these walls" is an example of a hyperbole. Hyperbole is among the many figures of speech in which it refers to the exaggeration of some scenes with the aim of spreading humor and fun.
When you look for similarities in two things you read you compare them
