Prohibition needs to name a specific card. Not archetype, or all cards with 'something' in their name. So you could use it on Machina Fortress, but that wouldn't stop other Machina monsters being...
There is a complete Heroes wiki at http://heroeswiki.com/Main_Page
Hope that helps
Ok, here goes anyway though . . .
Peter Petrelli: Absorbs others powers, leaving them with their powers.
Nathan...