What’s unusual about this poem, composed by James Rambo for Word Ways, May 1977?

Use fulsome howl or direst word in galling us; toil over a shoddy ode?
Listen, dressed in gyves, tiger, allies fall, ensnared in timeless eras, mentally in agony, essays in gall.
Outwit Hades, ignore verses, you real lover? Come!

Useful somehow, Lord, I rest, wording all in gusto I love.
Rash odd yodel is tendresse; dingy vestige rallies fallen snared.
In time, lesser as men tally, I nag on — yes, say, sing all out — with a design.
O reverses, you’re all overcome!

The two stanzas are spelled identically.