John Taylor (
Nightside series, by Simon R. Green).
He isn't a wizard, though he is a detective...
Anyway.
He has the Ability (capital A) to find anything.
In addition to the usual finding of lost things:
He's "found" the bullets in someone else's gun so often it's now his party trick.
He's "found" his enemy's death (that was an alien disguised as a living house, trying to eat him).
He's threatened to "find" peoples' internal organs if they don't stop bothering him.
And much, much more.
(Now imagine how bad the Big Bads must be, if they can threaten him...)
Rather handy, this Finding Things.
