Raphael maybe entertained by game that’s fixed (10)
I believe the answer is:
changeless
'fixed' is the definition.
(thesaurus)
'raphael maybe entertained by game' is the wordplay.
'raphael maybe' becomes 'angel' (I am not sure about this - if you are sure you should believe this answer much more).
'entertained by' means one lot of letters goes inside another (inserted letters are hosted or entertained).
'game' becomes 'chess' (board game).
'angel' going within 'chess' is 'CHANGELESS'.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for changeless that I've seen before include "Very steady" , "same as always" , "Consistent" .)