Editing Yagura:SRD:Casting Spells (section)

=====Injury=====

If while trying to cast a spell you take damage, you must make a [[Yagura:SRD:Concentration Skill#Manage_Interruption|Concentration]] check [[Yagura:SRD:DC|DC]] 10 + 1 per 3 points of damage taken + spell level being cast. The interrupting event strikes during spellcasting if it comes between when you start and when you complete a spell (for a spell with a casting time of 1 full round or more) or if it comes in response to your casting the spell (such as an [[Yagura:SRD:Attack of Opportunity|attack of opportunity]] provoked by the spell or a contingent attack, such as a readied action).

If you are taking continuous damage half the damage is considered to take place while you are casting a spell. Repeated damage does not count as continuous damage.