Default Hero Spell MUIness?

Are all default hero spells MUI?
or in other words:
Is there some default hero spell that is only MPI?

Ehh, I don't think so, but, why do you need something like that?

I don't need it, I just want to know if such spells exist because they could be trouble.

No.

There aren't many hero spells that have looping effects, and the ones that do are all MUI. I've actually tested this (although not intentionally) in a experimental hero arena thing that I made years ago.