There should a consumable item in the shop that costs about 300 gold, has a 0.5 second cast time and does nothing but interrupt another demigods ability.
I think this would be pretty quick to implement and would help balance out the game a little, and make some of the "underpowered" demigods like Regulus and QoT a little more useful when late game portal control tactics come into play.
Give me your thoughts on this one.
Thanks
Shred_Demon