Lanefan
Victoria Rules
It retcons the result of the die roll, or tries to. What was declared as a hit becomes a miss. In the fiction, this equates to taking an attack that has already connected and rolling it back to before the foe's swing began, such that the spell can be cast and the magical shield have time to interpose itself.I disagree. No damage roll, no retcon, as nothing is being rewritten in the fiction. I agree that retcons are not part of the player role, and shield isn't one.
For this to not be a retcon the player would have to make the decision whether to cast Shield before knowing whether the attack hit or missed.
Broader issue: time only flows one way.