Final answer:
The allusion to Elysium in a poem adds depth by creating a layered imagery of bliss and peace, and engages readers with cultural and historical references to Greek mythology and literature.
Step-by-step explanation:
The use of Elysium as an allusion in a poem primarily has two effects. First, it enriches the poetic imagery by bringing in the connotations of paradise and ultimate bliss associated with Elysium in Greek mythology, thereby giving the poem a deeper, more layered dimension. Secondly, this allusion serves as a cultural reference, connecting the poem to ancient Greek literary and religious traditions and thereby extending the poem's meaning and its connection with the past.
The reader becomes engaged on a more intellectual level as they recognize the historical and mythological significance of the term. The allusion to Elysium may also imply a discussion of the soul's journey, virtue, and the afterlife, depending on its usage within the poem. For instance, by referencing Elysium, poets like Virgil tapped into the richness of Greek mythology to explore themes of eternal joy, the distinction between different souls, and the concept of the underworld described in texts such as the Orphic Gold Leaves and Virgil's own writings.