During integral scenes (with the approval of the staffer/storyteller running the scene), someone with the Sorcery quality may wish to invoke some sort of effect that is needed at the time, though they do not have a spell that covers such a thing. The PL of the spell is determined per NEWS SPELL DESIGN with a +2 PL for instant casting. The Sorcerer must spend 2 drama to invoke this ability. They also may not spend Drama on the actual roll, as well.
An on the fly spell will automatically gain a number of Black Magic Points equal to the final Power Level of the spell effect. A failed roll of this nature will only gain a number of BMP equal to half the casters willpower - deciding to rewrite reality on a whim comes with consequences.