One last thing to address: Spell Overcharging. Looking at page 66/67 of RQ, each MP of overcharge improves spell Magnitude AND lowers the Resist Trait, AND increases the Duration trait. Going back to the Opposed test situation, if someone successfully resists a successfully cast, overcharged spell, and gets the better success, it shouldn’t, in my view, completely negate the spells effects, but should be able to diminish them. Hence the rule to reduce the additional effects of overcharging. Clearly it’s dependent on the spell, but take a Disruption spell, for instance. A spellcaster could overcharge it to cause multiples of 1D3 damage for each point of Magnitude; useful against big, tough, opponents resistant to mundane attacks. In the RAW, failing to resist it with Resilience exposes the target to fatality, especially if overcharged by 2 or 3 points (which isn’t unlikely). This is still true in an Opposed resistance if you fail in your Resilience opposed roll. If you succeed with the better success, then you’ll resist the Disruption fully. If you succeed but don’t win, you’ll take the spell’s effect, but at a Magnitude of 1. This reflects the partial success of the resister, and the expertise of the caster, by negating some, but not all, of the overcharged spell.