[Ebimaru]

As I said before: If you want to nerf Minefield's duration? On one condition.

Just have the mines spawn evenly throughout the user to compensate.

Minefield doesn’t need a compensation to be nerfed considering how oppressive it is, and the non-evenness is necessary to allow armed users to even have a chance of closing in. I think of the revolving door of minefield as a feature of the spell, honestly.