I think it depends just what he can do with it - for example, if it only moves him back the length of time the song lasts, and he can (as always) only use it once per 24 hours, then he has to not only see what he shoiuld do differently immediately but make the descision that it's worth using his do-over on - if that's not enough, make it drain his magegift for an hjour or two afterward, leaving just his no-song powers, or even draining them somewhat.
- CD
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
- CD
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows