One of the ice skills. You only need Mabufu really, Chie's magic stat and sp pool are pretty pathetic. Only need Mabufu for random battles and all out attacks. Otherwise you should be using her physical skills.
*insert random pseudo-intellectual/quasi-humorous/narcissistic sig here*
Im only saying that cause I still think Mabufu still has its use, it still does as much damage as heat wave, but if Chie decided to just throw it out there, then she can still "weak" some characters and your party can take advantage, thats where I think Mabufu has an advantage over heatwave.
PSN: SkyDivider (new one, add me! I need some PSN friends) Playing: Valkyria Chronicles, Odin Sphere, Persona 3:FES, Persona 4