Although ritual spells, if mastered and cast under calm circumstances, can be cast without a risk of botching. Under such conditions, if the Penetration total does not matter, the troupe may decide to forego rolling the dice.
Or to delay (perhaps indefinitely) rolling the dice until the roll result becomes relevant!
That's how we handle the Aegis in our saga, for example.
The problems arise, if the casting happens in hihgh hostile Divine Aura, as Divine Aura reduces 3 from Casting Total for every point of Aura. I wodner where do you get Casting total of 50 wiht CrIg 30 ? Stamina has maximum of 5. The casting total is (Stamina + Arts + Aura)/5.
But on magic aura, the lighting a candle is no problem at all with division by 5 with CrIg30 as Aura gives at least +1 and worst stamina is -5 unless wounded or fatigued. As 31 - 5 = 26 / 5 = 5.2 allowing level 5 spell.
I said that a spell which is level 10 requires a casting total of 50 to cast spontaneously without fatigue, not that the caster had a casting total of 50.
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