Right, so, Scenario: Lets say our intrepid heroes are tracking a supernatural threat across the city.  This threat uses a flute to lull people to sleep and then robs them.  Maybe a bank, or a store.  The wizard sees the residual magic, uses the sight, examines a victim, basically figures out that it is a flute causing the catatonic state.

Once the wizard is ready to face the threat, he starts the day by using his high lore skill, some decelerations and an aspect to traumatically place a 6 shift block on a pair of earmuffs.  A 6 shift block against flute music.  It's thaumatur2gy so it lasts basically until the next dawn. He argues that as written the rules for thaumturgy are presented so that you can carry out the 4 basic actions you can with evocation.

I am uncomfortable with this resolution and this level of power in the magic system.  I cannot, however, find something that really says that the magic system does not work this way.  I could just treat it as an on the fly magic item, like a potion, but that isn't right either.

Any thoughts, is this totally legal?  Am I missing something?

fyi, I let him get do it because it allowed he and the other players to have a ton of fun feeling super powerful going into the fight.  I just want to see if this is normal.