Board Thread:General Discussion/@comment-1739368-20121205124732/@comment-37422009-20190120044054

Things that happen during the 10 seconds can have an effect, however nothing can affect Diavolo and he can't affect them.

Epitaph doesn't forcast perfectly, only the end result of the 10 seconds. Also if he would die in the next 10 seconds he could still use the ability, while if it was used afterwards he wouldn't be able to because he's, well, dead.