Washington Wizards center (and activist) Thomas, 4 letters
Babylonian hero of myth, 5 letters
Babylonian hero who tried to reach heaven on an eagle (anagram of AETNA), 5 letters
Eagle-riding hero of myth, 5 letters
He tried to fly on an eagle, 5 letters
It is injected twice a week in the treatment of rheumatoid arthritis, 10 letters