What does the cryptic crossword clue "Satan with aim to create Devil's Island? (8)" mean?

The definition is "Island?". The wordplay uses an anagram. anagram of SATAN + AIM = TASMANIA; definition: "Devil's Island?" The answer is TASMANIA.

Satan with aim to create Devil's Island? (8)

Times Cryptic #26850 | 11 Across | 2017-10-07 flower