The oxymoron "last onset" appears in the second stanza, for which (*) "breaths are gathering sure... when the king / Be witnessed in his power."  
Kamilla Denman notes the "anarchic use of the dash" in this poem, while Beth Jensen posits that the "eyes" in the second stanza of this poem cast a "patriarchal gaze" on the narrator, citing Julia Kristeva's theory of the abject to explain the legal rejection of the body in the third stanza.  The oxymoron "last onset" appears in the second stanza, for which (*) "breaths are gathering sure... when the king / Be witnessed in his power."  The narrator "signs away / What portion of me I / Could make assignable" before the title figure "interposes."  That figure makes a "blue, uncertain, stumbling" sound before "the windows fail, and" the narrator "could not see to see."  That insect makes the last sound the narrator hears in, for 10 points, which poem by Emily Dickinson?
Kamilla Denman notes the "anarchic use of the dash" in this poem, while Beth Jensen posits that the "eyes" in the second stanza of this poem cast a "patriarchal gaze" on the narrator, citing Julia Kristeva's theory of the abject to explain the legal rejection of the body in the third stanza.  
"{I Heard a Fly Buzz When I Died}"