The Midas curse is taken from Greek mythology. In it the greedy King Midas was cursed so that everything he touched turned to gold. This was great until he inadvertantly touched his beloved daughter and turned her to gold as well.
Somehow I don't think this is the spell you're looking for. What do you expect your spell to do for you?
And may I add to that
Another King Midas ruled Phrygia in the late 8th century BC, up until the sacking of Gordium by the Cimmerians, when he is said to have committed suicide.
So I'd guess Midas could have more meaning than just a king