Vampire Marauder

Mercenary (This creature enters the battlefield under
no one's control and with a coin counter on it.)
Hire {3} (Gain control of this creature until end of
turn, then put a coin counter on it. It costs {1} more to
hire for every gold counter on it. Players may activate
this only during their own turn.)
Whenever Vampire Marauder's owner hires it,
they may remove a coin counter. If they do, then
they create a treasure token.