How can I be passin' the likes o' the Leprechaun now

Hint 1 of 7:

Maybe a little of the wearing of the green?

Hint 2 of 7:

Maybe combined with a little bit of luck?

Hint 3 of 7:

Did you find the four-leaf clover?

Hint 4 of 7:

The clover is three screens east of the door in the cliff.

Hint 5 of 7:

Or maybe some music would be even beter.

Hint 6 of 7:

Play the fiddle for him, if you have it.

Hint 7 of 7:

You will then be able to get both the scepter and the magic shield.