Cruel legislator with zero wit moving to the left (5)
I believe the answer is:
draco
'cruel legislator' is the definition.
'draco' can be an answer for 'legislator' (I've seen this before). I'm not certain of the 'cruel' bit.
'with zero wit moving to the left' is the wordplay.
'with' is a charade indicator (letters next to each other).
'zero' becomes 'O' (O resembles 0).
'wit moving' becomes 'card' (I am not sure about this - if you are sure you should believe this answer much more).
'to the left' says the letters should be written backwards (reading from right to left).
'o' next to 'card' is 'ocard'.
'ocard' backwards is 'DRACO'.
Can you help me to learn more?
(Other definitions for draco that I've seen before include "Constellation, the Dragon" , "death-dealing lawman" , "Harsh legislator" , "Athenian statesman" , "Athenian lawmaker" .)