Storm club involved with Tudors (10)
I believe the answer is:
cloudburst
'storm' is the definition.
(sudden rainstorm)
'club involved with tudors' is the wordplay.
'involved with' is an anagram indicator (involved can mean confusing or complex).
'club' anagrammed with 'tudors' makes 'CLOUDBURST'.
(Other definitions for cloudburst that I've seen before include "sudden shower" , "Sudden, heavy downpour" , "dramatic downfall" , "Sudden rainstorm" , "storm" .)