How does that fit here though!
The coin did nothing
I'm going to resolve this tomorrow. Either by somehow working this in to the magic... or giving you a hard no.
I've got to go to sleep
Your hand erupts in flame, but doesn't burn you.
"No idea."
Why doesn't the coin need to be magic to work? I like to preview magic before making it canon.
A successful wish means it does exactly what you want. An unsuccessful one means it is ineffective or doesn't do what you want.
No, you did say any coin though...
"Vellelu's hoard."