[Autumn]

I agree entirely that invocations are only strong because there is no way to stop them from nuking your entire health bar WHILE remaining careful, you could play a fight like a genius and try to thwart a mage at every turn but the moment you stand in range of an evoker (Which, their range is rather large, being rivaled only by specialized gunners and archers) you will die.

However Kameron brings up a good point here, invocations costing 3 and then 4 momentum will put them into a state of balance to where silence will matter a lot but not be too overbearing for the prepared mage.