"Thank you.  I apologize for requiring that resource of you, especially since the way in which it came about, that of my attempting to immunify myself against any economicmagics cast on myself without my knowledge, reflected both my ignorance of whether to trust you and my stupidly forgetting the spell already on me."

"Last spell cast, now."  Keltham casts his fourth-circle divination.

"Thank you.  I apologize for requiring that resource of you, especially since the way in which it came about, that of my attempting to immunify myself against any economicmagics cast on myself without my knowledge, reflected both my ignorance of whether to trust you and my stupidly forgetting the spell already on me."

"Last spell cast, now."  Keltham casts his fourth-circle divination.  Maybe it brings answers, if it's the most powerful answering-spell.