[quote=WitchChild]
Sure, there would be a limit to it. Such as time that is needed to sort through the memories, implant the memories etc etc. Nothing instantanious. But how fair is it to be up against a Pyromancer that can melt your face with a thought? Or an Electromancer that can manipulate magnetism which is control of everything metal. Hell, using Magnetism to become a human rail gun for Gods sake. Nothing is fair when you take time to think about it.
[/quote]

I think Witch has a point here, all bloods have some pretty powerful effects. Like vitamancy, with the ability to damage a person by using their magic on their insides. How would one defend against that without a rune or something? Psychomancy's counter is mental wards, but I think runes are the only thing that would work there.