I am changing Counterspell (will issue an errata for Fightin Fungi at some point). The way it is written causes some problems. Here is the new text:
Tags: Battlefield. LoS Required
This spell is cast as a free action. As soon as an enemy mage successfully casts a spell, the counter-spelling mage performs a Q roll on 1,2, or 3 dice (his choice), using any successes to cast the Counter-spell. He must have a LoS on the mage whose spell he wants to counter. Roll a die for Counter-spell, and the opponent rolls a die for the spell to be countered, adding their respective power to the rolls. If the Counter-spell wins, the target spell is negated. If the rolls tie or target spell wins, target spell is cast successfully.
Backfire: May not cast spells for the remainder of the game.