How does countering spells work?
Good question! In the old days, spells only had a strength for the entire spell, these days each segment has its own strength. This means that the counterspeller has more options! When you cast a counter-spell, select what specific component you are diminishing. If you’re stacking counter-spell (Counter-spell/2, for instance), then you can pick as many components as appropriate. These components are shrunk as normal, losing power by the amount of power in your counter-spell casting. For damage, reduce proportionately, down to nothing if the component is completely nulled. But what if they don’t aim for the effect component? What happens when your fireball has its target component ripped out? Well, you get a fireball at your feet. This is a bad thing for the caster. Unless the spell has immunity enhancement, the unexpected internalization of the spell (Even if it’s not an area of effect) deals damage to the caster as if he were the target, at half normal damage. People around the caster