Garthanos
Arcadian Knight
i hate the spell. I hate using it on the PCs and cancelling their action, slot and plan without even a roll, and I hate it being used against me as a DM. If there was an opposed Arcana check so that it was a contest of willpower, that would help. I'll probably remove it from my next campaign and relegate to a rare magic item with limited charges or something.
There is a roll if they are countering a spell that his higher than 3rd... but I can see how opposed checks might feel more dynamic - my idea was to have d4+spell level+int? damage of a type perhaps related to the spell countered if you succeed and snap back damage if you fail, while allowing even countering lower level spells be somewhat more questionable.
I definitely understand not wanting to say no to their action,slot and plan regardless. Hated spell interference iin 1e as a DM because spell slots were such a resource at low levels.