-tion and -cian words Crossword

If you play an instrument you are called this
This person tests your eyesight
When your electrics don't work you call one of these.
This person can make things disappear
A person who is professionally involved in politics
Some one that is really good at maths
You might win something if you enter this
When you refer to something briefly
A reason or justification given for an action or belief
You go to the doctors for one of these
The action of pausing before saying or doing something
Consequence for not doing the right thing