Here are the possible solutions for start of a brilliant scheme clue
Answer
Clue
Relevancy
idea
Clue
Start of a brilliant scheme
Definition
a conception or a plan
abab
Clue
Scheme for the start of a sonnet
aha
Clue
"Brilliant!"
"That's brilliant!"
"How brilliant!"
Definition
an interjection expressing exultation
aldebaran
Clue
Brilliant orange star of the northern sky
alea
Clue
"Give Schweppes Ginger ___ try!" (brilliant soda slogan I just made up) (this clue dedicated to the great Merl Reagle, the master of saving weak entries; RIP, Merl)