The most common and most likely answer to this crossword clue is the 5 letter word WOTAN
I've seen this crossword clue in Independent
W
O
T
A
N
More clues leading to the result WOTAN
- German god, now retired, receives thanks
- Ancient curse dominating early part of Tannhäuser
- God’s female, feminist ultimately claimed
- Ring supremo of security group with backing
- Ring saga 2 came in first, accepting cheers
- God knows, bank margins have dropped
- Germanic God triumphed, conquering capitals of Troy and Asgard
- Deity in religious books with pale covering
Buddy explains!

The straight part
We know that "Ring saga 2" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ring saga 2 = wotan.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.