Cheers with depraved sultan becoming victim of hellish punishment (8)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

TA (cheers) and an anagram (‘depraved’) of SULTAN. Tantalus was a Greek mythological figure who was made to stand in a pool of water that he was never able to drink from, underneath a fruit tree whose fruit was always out of his reach.