I attempted to write a sestina
With the grace of a deft ballerina.
But the form's so constrained
My poor feet got too strained!
Lithe gazelle became lurching hyena.

Based on the suggestion: “sestina”

A sestina is a poetic form with six stanzas of six lines each and then a seventh, three-line stanza. The end words of each line in the first stanza are reused as end words in the other five stanzas, and also appear in the three-line stanza. Those end words have to be employed in a specific order in each stanza, further constraining the poem. 

I have never seen a graceful sestina.