Possible Clues:

• Artifice of befuddled magistrate lacking imagination for a start
• Matt rages after changing plan
• Start game unconventionally, making attempt to gain advantage
• Trick flipping enormous flans
• Tactic or manoeuvre to gain advantage
• Manoeuvre to find precious stone under geological layers
• Plan getting precious stone under layers of rock
• Plan for rejecting large pastry dishes
• Deceptive maneuver
• Trick is, call girls back with a diamond?