Magic in Heroes of Might and Magic V.

I'm currently playing the campaign for the Orcs.
How could it be that a race that despises magic is the only one in the game that has spellcasting creatures with infinite mana???

The thing is that in Heroes, there are no races without spellcasting creatures. So the developers had to come up with a solution and give the Shamans two simple (though quite effective) spells.