If you feel uncomfortable about what you're saying then specs will notice. In fact you don't need to say anything at all, if you take a deck out of your pocket or wherever, whilst chattering on about whatever you need to be saying, remove the cellophane wrapping and open what seems to be a brand new unused, very clean and shiny deck then the implicit assumption will be that it's new, unused and perfectly normal. No need to state what ought to be obvious. A lot of new performers fall into the trap of saying something like, "I take this perfectly ordinary handkerchief…" Why? If you took your handkerchief out to blow your nose, would you announce to the word that it's ordinary? No, they would assume it to be so and you don’t say anything to make them think otherwise. that way, you're not lying and your conscience can sleep easy. Anyway, magic is full of wrong illusions and part of the job is to mislead spectators to their full enjoyment.
I'm assuming you're using the special deck which allows such a result and that you can fit new cellophane after each performance

?