Change #68f0814d31d96f9dd4564b32:

When a hostile or otherwise unwanted spell is cast during a war session, $150 (Per Era) may be spent to cause the caster to reroll. Double the cost if the spell was casted with a natural 20 or using a MRP. → Whenever a spell is cast during a war session, the wielder may pay $150 (Per Era) to cause the caster to reroll it and take the lower of the two results. Double the cost if the spell was casted with a natural 20 or using a MRP.